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econhelp
Australia
เข้าร่วมเมื่อ 23 ม.ค. 2018
Hey everyone welcome to econhelp!
I created econhelp with the view to providing intuitive, explanatory videos on a range of undergraduate topics within economics. My channel is still growing, so at the moment I mostly focus on undergraduate microeconomics but hope to extend to macroeconomic and mathematical economics in due course. Please let me know if you would like me to cover any particular topic!
*** I am currently trialling online tutoring, either 1:1 or in small groups - see form on my webpage - www.econhelp.com.au or email me for enquiries if you are interested (econmathhelp@gmail.com) ***
Thank you to my subscribers!
I created econhelp with the view to providing intuitive, explanatory videos on a range of undergraduate topics within economics. My channel is still growing, so at the moment I mostly focus on undergraduate microeconomics but hope to extend to macroeconomic and mathematical economics in due course. Please let me know if you would like me to cover any particular topic!
*** I am currently trialling online tutoring, either 1:1 or in small groups - see form on my webpage - www.econhelp.com.au or email me for enquiries if you are interested (econmathhelp@gmail.com) ***
Thank you to my subscribers!
Finding Mixed Strategy Nash Equilibrium with Battle of the Sexes
Hi Everyone in this video I solve for the mixed strategy nash equilibrium in the battle of the sexes.
0:00 Introduction
2:05 Introducing Mixed Strategies to the game
3:24 Finding Player 1's Expected Payoff and Best Responses
9:32 Drawing Player 1's Best Responses
11:42 Finding Player 2's Expected Payoff and Best Responses
14:11 Drawing Player 2's Best Responses and Finding Mixed Strategy Nash Equilibrium
Other videos:
th-cam.com/video/zVyfoDRcT0I/w-d-xo.html
th-cam.com/video/3EOlRF7EjKU/w-d-xo.html
th-cam.com/video/vpZwiV08RFc/w-d-xo.html
0:00 Introduction
2:05 Introducing Mixed Strategies to the game
3:24 Finding Player 1's Expected Payoff and Best Responses
9:32 Drawing Player 1's Best Responses
11:42 Finding Player 2's Expected Payoff and Best Responses
14:11 Drawing Player 2's Best Responses and Finding Mixed Strategy Nash Equilibrium
Other videos:
th-cam.com/video/zVyfoDRcT0I/w-d-xo.html
th-cam.com/video/3EOlRF7EjKU/w-d-xo.html
th-cam.com/video/vpZwiV08RFc/w-d-xo.html
มุมมอง: 70
วีดีโอ
Introduction to Mixed Strategies in Game Theory
มุมมอง 233วันที่ผ่านมา
Hi Everyone, in this video I introduce mixed strategies in game theory. I do have a video that goes through mixed strategy nash equilibrium in the battle of the sexes game: th-cam.com/video/MIJB6tY8BR8/w-d-xo.html It is a good idea to make sure you are confident with the more rudimentary theory before you get onto this stuff. I have some videos that might help with that background: th-cam.com/v...
Practice Question on Price Floors (with Algebraic Functions)
มุมมอง 217หลายเดือนก่อน
Hi Everyone! In this video I go through a practice problem which is all about price floors. In the question I will be working with algebraic functions. The video covers - Imposing the price floor, evaluating if the floor is binding (or not), and welfare analysis. Alternative Video: Practice Problem on Price Floors without Algebraic Functions (only Diagrams) th-cam.com/video/rnmkP6jUavg/w-d-xo.h...
Price Floors Practice Question (No Algebraic Functions)
มุมมอง 350หลายเดือนก่อน
Hi everyone, in this video I go through a practice problem which is all about price floors. I don't use algebraic functions, I just read off a diagram. It's a common sort of question in some text books. The question focus' on imposing the price floor, evaluating whether it is binding or non binding, and evaluating the surplus. I'm going to do a similar question with functions, I will post a lin...
Practice Problem on Public Goods and Vertical Summation (+ Free Riding + Underproduction) (Part b)
มุมมอง 712 หลายเดือนก่อน
Hi everyone!!! I hope you guys are well!! In this video I answer part b of the practice problem on public goods. Part a: th-cam.com/video/hJ14byN5OUY/w-d-xo.html 0:00 Introduction 0:49 Joe's demand when the price is 80 and Free Riding 2:40 Showing underproduction when the price is 80 4:30 The market when the price is 120
Practice Problem on Public Goods and Vertical Summation (+ Free Riding + Underproduction) (Part a)
มุมมอง 1302 หลายเดือนก่อน
Hi everyone in this video I go through the first part of a question which is all about Public Goods. In the question I demonstrate: *vertical summation *free riding *underproduction of public goods 0:00 Introduction and reading of the question 1:06 Demand as Marginal Benefit (MB) 3:24 Social Marginal Benefit (SMB) and Public Goods 6:06 Finding where the kink is 8:47 Seeing the SMB visually Othe...
Labour / Leisure Budget Constraint with Non-Labour Income (Practice Problem)
มุมมอง 2553 หลายเดือนก่อน
Hi everyone, in this video I'm going to demonstrate the drawing budget constraint, for our labour leisure model, when we have some non labour income. 0:00 Introduction 0:34 Starting the diagram and defining variables 2:08 Budget Constraint 4:20 Drawing the Budget Constraint
Explaining why MRS = |Slope of Indifference Curve|
มุมมอง 3984 หลายเดือนก่อน
Hi Everyone in this video I explain why we take the MRS (Marginal Rate of Substitution) to be equal to the absolute value or the negative of our Indifference Curve. 0:00 Introduction 0:33 Reviewing Slopes 2:41 Slope of an Indifference Curve 4:57 Interpreting the slope of an Indifference Curve as MRS 6:05 Second example Finding the Slope / MRS as the ratio of MUx/MUy: th-cam.com/video/hqbyHwsn7Z...
Why MRS = MUx/MUy (Equation for Marginal Rate of Substitution)
มุมมอง 8524 หลายเดือนก่อน
Hi everyone in this video I explain the equation of our MRS, which is our marginal rate of substitution, between two goods, x and Y, which we find by taking the marginal utility associated with good X and divide it by the marginal utility of good y. 0:00 Introduction 0:57 Strategy (Find the slope of the indifference curve to find formula for MRS) 1:46 Rise / Run on the Indifference Curve 2:10 U...
Comparing First, Second and Third Degree Price Discrimination
มุมมอง 6465 หลายเดือนก่อน
Hi everyone in this video I compare first, second, and third degree price discrimination. As I discuss in the video, these strategies can be quite complex in their own right, I have done separate videos on all of these: First Degree: th-cam.com/video/dLzFdY8d7pc/w-d-xo.html Second Degree: th-cam.com/video/gowIH8MsRiQ/w-d-xo.html Third Degree: th-cam.com/video/Z8SGBEBcEVU/w-d-xo.html Two Part Ta...
Finding MRS with Cobb Douglas Utility (example problem)
มุมมอง 2785 หลายเดือนก่อน
Hi Everyone! I think the tricky stuff around these sorts of calculations is the algebra. Here's my video on the rules of exponents: th-cam.com/video/8S5Ig6scF0A/w-d-xo.html And simple calculus rules: th-cam.com/video/nm9qJY_6I1Q/w-d-xo.html Chapters: 0:00 Introduction 0:24 MRS=MU(A)/MU(B) 1:17 Finding Partial Derivatives 2:42 Substituting in and Simplifying
Third Degree Price Discrimination and Price Elasticity of Demand Practice Problem
มุมมอง 3186 หลายเดือนก่อน
Hi everyone in this video I'm going to go through a practise problem that explores the relationship between third degree price discrimination and price elasticity of demand. 0:00 Introduction / reading question 1:27 Our two type of consumer 2:18 Profit Maximisation 2:45 How to set up the Problem and Predictions 4:50 Pensioner's price 6:32 Adults Price Other Videos th-cam.com/video/eD1CcD23-Sw/w...
Third Degree Price Discrimination
มุมมอง 7006 หลายเดือนก่อน
Like the content? Buy me a coffee? !! Thanks so much !! www.buymeacoffee.com/econhelp Hi Everyone, in this video I talk about third degree price discrimination. 0:00 Introduction and brief review 0:38 Condition 1: Consumers are of Different Types 3:02 Condition 2: Identifies each consumer with a type 4:46 Condition 3: The problem of Arbitrage 7:00 Second Degree versus Third Degree Price Discrim...
Solow Swan: Algebraic Set up and Solutions (no technology)
มุมมอง 1486 หลายเดือนก่อน
Like the content? Buy me a coffee? !! Thanks so much !! www.buymeacoffee.com/econhelp Hi Everyone, in this video I go through the algebraic setup and solutions for a simple version of Solow Swan. 0:00 Introduction 0:34 The production Function 1:36 Putting the Production Function in Intensive Form 3:31 Capital Accumulation 5:17 Growth rate of capital/labour ratio 7:25 Finding Capital Accumulatio...
Savings Equals Investment in a Closed Economy
มุมมอง 4067 หลายเดือนก่อน
Savings Equals Investment in a Closed Economy
Taking Logs and Derivatives: Example and Explanation
มุมมอง 917 หลายเดือนก่อน
Taking Logs and Derivatives: Example and Explanation
Marginal Product of Capital (MPK) (Continuous)
มุมมอง 3897 หลายเดือนก่อน
Marginal Product of Capital (MPK) (Continuous)
Marginal Product of Capital (MPK) (Discrete Case including note on Diminishing Marginal Product)
มุมมอง 3747 หลายเดือนก่อน
Marginal Product of Capital (MPK) (Discrete Case including note on Diminishing Marginal Product)
Example of Finding Cross Price Elasticity of Demand with ARC (Midpoint) Formula
มุมมอง 3698 หลายเดือนก่อน
Example of Finding Cross Price Elasticity of Demand with ARC (Midpoint) Formula
Practice Problem: Value Added Approach to GDP
มุมมอง 3298 หลายเดือนก่อน
Practice Problem: Value Added Approach to GDP
Value Added Approach to Measuring GDP (Gross Domestic Product)
มุมมอง 7378 หลายเดือนก่อน
Value Added Approach to Measuring GDP (Gross Domestic Product)
What Makes a Game a Prisoner's Dilemma?
มุมมอง 1.3K8 หลายเดือนก่อน
What Makes a Game a Prisoner's Dilemma?
Solving a 3x3 Game Matrix (Nash Equilibrium, Dominant Strategies, Dominance Between Strategies)
มุมมอง 18K9 หลายเดือนก่อน
Solving a 3x3 Game Matrix (Nash Equilibrium, Dominant Strategies, Dominance Between Strategies)
The Expenditure Approach to Measuring GDP (+ Special Note on Housing)
มุมมอง 2049 หลายเดือนก่อน
The Expenditure Approach to Measuring GDP ( Special Note on Housing)
Strict and Weak Dominance in Game Theory
มุมมอง 6K10 หลายเดือนก่อน
Strict and Weak Dominance in Game Theory
Game Theory Practice Problem: Simultaneous to Extensive Form; First Mover Advantage
มุมมอง 5K10 หลายเดือนก่อน
Game Theory Practice Problem: Simultaneous to Extensive Form; First Mover Advantage
Circular Flow Diagram: Output = Income = Expenditure
มุมมอง 77410 หลายเดือนก่อน
Circular Flow Diagram: Output = Income = Expenditure
I have been trying to understand this for the past three hours and you just saved me. Honestly, thank you
I am learning micro-economics this year in grade 11 , and I have a quiz on monday, This helped me understood after the teacher said she wouldn't repeat. Thank u so much for making me understand
Aw wow your teacher is rough lol!! It's a really important concept, I'm so happy you understand! xx
I love you. Finally I understand this for the assignment. Thank you so so much!
Aw that's so nice! I'm so happy the video helped. Thanks for the comment, good luck with your assignment!!
Great video thank you 🙌 can you please do a series on consumer equilibrium and deriving a demand curve using indifference analysis. Your videos are amazing and our class relies on them. Thank you 🙏
Yes! That's a great idea! I think it will take me a while though, unfortunately I'm very slow and I have some videos on mixed strategies that I have to finish first. Hopefully I can get something up in time for it to be useful for you! xxxx Thankyou so much for the comment!
Thanks so much now I I'm able to do it on my on
That's the goal! That's excellent, well done!! Thanks for the comment!
Can i use the linear equation formula -mx+b to identify the unit??
Hi! I think I understand your question but I'm not certain. - I think mx+b can work: if we understand b = vertical axis intercept = number of vertical axis good we can make if we allocate all of our resources to the production of that good. Plus, the slope of the ppf is equal to the opportunity cost of making the horizontal axis good. So I think it could work if we can get that information. Does that help?
@@econhelp_official I thought it's gonna be -mx+b because the rate of slope, m=-1/3 and -2/3 so... This is what I mean. Actually, I had no background in economics and maths and I've started learning last month so I have some doubts about it too and yeah I'm kinda dumb in econ and maths too.
Oh yeah, I don't include the negative when I write the general form. I don't think your dumb at all! Have faith in yourself, it's really good that you are thinking abut things in lots of different ways!! Economics is heaps of fun!!
thank you so much!
You're welcome! thanks for the comment!!
so helpful, thank you :)
Glad it was helpful! Good luck with your studies!!
00:05 The kinked demand model of oligopoly explains the difference between relatively inelastic and elastic demand curves. 01:29 Kinked demand model explains non-price competition in oligopoly. 02:54 Oligopoly firms face a kinked demand curve 04:22 Kinked demand model shows elastic and inelastic demand reactions to price changes. 05:42 The kinked demand model leads to a discontinuous marginal revenue curve at Q star. 07:04 Firm's incentive to lower prices above P star and increase prices below P star 08:22 Marginal cost affects price and output, but real-life prices can be sticky. 09:50 The talk focuses on the unique demand concept in oligopoly. Crafted by Merlin AI.
Thank you.
You're welcome! Thanks so much for the comment!
Thank you…excellent explanation
Thank you so much! Good luck with your study! xx
Thanks! super helpful
Glad it helped! Good luck with your study!!
So I am sure it's possible but what happens when you add a variable like price to it? I am sure it's easy math but I am novice. I.e Radio=$75 T.V.=$56
Really good question! So... in more complicated models we actually find that the general equilibrium result in perfect competition is that the ratio of prices is equal to the opportunity cost. But that's like... second year uni usually. At this level, when you are just starting, I wouldn't bring prices into it yet. We have models to find prices and you have to get through those models first... for instance, prices are determined, in perfect competition, at the intersection of demand and supply. Here, we are just getting into the mindset of thinking about what it means when we are trading off between two things.
Three classes at Uni and you thought me in five minutes. Thank you for saving my exam *u*
Aw wow! Good luck with your exam!!
Thanks, from India
Thank you, very helpful
you explained this so well, is there a video of you doing harder mathematical questions, for example one where K and L have different powers?
Hello! I don't think so! I do need to do another video on Cobb Douglas and Returns to Scale because there are very specific things going on there. Can you give an example of the functions you are wanting to go through?
Salute to The goddess of Econ
Your videos are easy to understand and not unnecessarily long...thanks!
You are a sexy ah bod
Thanks you so much.
This is basically the matching pennies game.
you're actually the absolute best I'm trying to do my homework and I have a test tomorrow and I just did NOT understand the way it was explained and felt like an idiot sitting through lecture with everyone else understanding. I'm literally binging your videos right now and they are SO great Update: I THINK I DID GOOD!!! IT WAS SO MUCH LESS DAUNTING THAN ORIGINALLY
Thank you thank you thank you! This part of the chapter has been so confusing to me, no one has explained this clearer. You are an amazing human being.
My AP microeconomics class had a lesson on this today and I didn't really understand it, but watching this helped, thank you!
Makes no fucking sense
Thank youu
Thank you for sharing your videos! Please don't stop. You are definitely helping me understand my game Theory class!
thankyou for the easy explanation
thankyou for the thankyou!! ❤️❤️
Thank you so much! Your videos really save my life😭🙏🏼🙏🏼 Could you do a video explaining mixed strategy as well?🥺🥺
Yes I will try! Give me a few days / a week ❤️
@@econhelp_official thank you so much!
you are the best always keep it up
Thank you so much 😀❤️ Good luck with your studies!
You explained so beautifully thankyouuu!!!
Thank you so much 😀❤️ Good luck with your studies!
Savior
Thank you so much 😀❤️ Good luck with your studies!
Really great video which i desperately needed because my lecture notes didnt explain this at all 😭 by any chance would you have any video examining LRAC and SRAC shifts when a firm uses cost cutting strategies? I'm really confused as to which one shifts when the firm reduces its own cost because i keep getting different answers 😞
I would think both shift down by the same smount? Does that work?
Why are u diving by 4
We divide both of Jack's number by 4 in order to normalise the number of Radios that Jack is making to 1 (4/4=1). In this original table we see that Jack gives up 6 TVs when he makes 4 Radios. When we normalise that ratio to be in terms of 1 Radio, we see that Jack gives up 3/2 TV's for 1 Radio.
thank you so much for this video. Tried hours to understand the concept, but after watching your video (and playlist) I truly understand the concepts
I'm so glad!! Thank you so much 😀❤️ Good luck with your studies!
without this I would have been totally lost
I was actually totally lost with this at first too! Hope it all gets better! Thanks for the comment :)
Holy shit u have made everything click
Excellent! Well done!
3 30am I'm dying, thank you.
:( Hope it all went okay 👍
This was so easy to grasp! Thank you so much!
Ohhhhhhh my god. Finally everything clicked at 4:05 . I've been staring holes into my prof's nonsensical shortest possible answer minimum effort notes and here I find the literal key information. Wild. I don't know why they eeven pay econ profs at universities anymore. Thank you!
Yes they should just pay me! 👍😜
Why did You not invert the function?
Thanks for the question! So the strategy of setting each variable to 0 and solving for the other in order to find the intercepts will work whatever form the function is in. For instance, note that the inverse demand function: P=25-Q/2 describes exactly the same relationship as the demand function: Q=50-2P It just looks different. You can check by setting each variable in each function equal to 0, both functions solve for a quantity axis intercept of 50 and and price axis intercept of 25. We can actually represent this relationship in a number of ways: Q-50+2P=0, P-25=-Q/2, ... etc. These are all legitimate algebraic descriptions of exactly the same relationship and the same curve. The first form (where P is on the LHS) is called the "slope -intercept" form of the equation of the line because the constant o the RHS is equal to the P-axis intercept and the coefficient on the quantity variable equal to the slope. So it's special in that way, but really you can use any form of the equation you want. Does that help?
I have watched atleast 10 videos before. But finally your video was the one which helped by finally understand it. Thank you so much.
I'm so glad! Thanks so much for the comment!!
I'm an ACCA student, and in F5: performance management we have to study this topic, I can't begin to explain what they've done to it in their syllabus, they outright refuse to use the brain... at all, and I'm not saying this out of anger or disappointment, it's just the way things are. E.g they refused to teach us Marginal Revenue bcz, and I quote "Studying MR requires mathematical derivatives, many of the students haven't studied it so it's not part of your ACCA syllabus, we'll just give you a formula MR=a-2bq, and elasticity is constant, wtf are derivatives? and oh, this "model" cannot be used in the practical world bcz it uses the high-low method, it assumes a linear relation btw demand and price" Then how about you don't use the high-low method? HL method is the biggest nonsense ever, stop shoving it down our throats. ever heard of regression? there are so many types of it, one of them might be appropriate? or how about you use some statistics and probability if appropriate? how about you don't assume a linear relationship btw Q and P? How about you stop doing the stupid things you're doing? Maybe the model would work if you would at least try to use your brain. WTF man???? I studied calc 1 in high school when I was 17, I studied multivariate calc and (some) differential equations on my own, calculus is the easiest thing out there and they refuse to do anything that requires them to use their brain, they do this all the time, they do this to everything, consider the problem of limiting factors, now imagine the most stupid way of approaching this problem, well ACCA have you covered, they teach Marginal and Throughput accounting, that only deals with one limiting factor, if there are two products and many limiting factors, there's linear programming, well, what if there are many products and many limiting factors? you may ask: "Well then go duck yourself, we can't teach you anything that's of value and requires you to use your brain". And I can't even begin to tell you what they taught us in the learning curve, this is the most stupid subject ever. Studying it just boils my blood. If someone is reading this, just don't go into accounting, and don't do certifications, they're not a good education. Go to a proper university and study a stem degree. A BSCS from an unknown university >>>>>>>>>>>>>> ACCA+ CFA+CA+MBA+ work experience from biggest A&F companies on earth.
I see this quite a bit. Follow your dreams! 🤗 You still have time!! 🤗
Thank you
Thanks for the video - I have a question, why are indirect income taxes "separately" part of the GDI? Are they are not implicitly included as a part of the incomes (private, HH, corporates, etc)?
Hello! I'm not sure! I would have assumed we just counted the gross. Can you give me a source for the discussion/textbook?
that's a great video....i understood perfectly
Glad you liked it! Thanks for the comment!
I am confused with the dominant for don
Don does not have a dominant strategy. His best response changes when Mike changes his action. Does that help?
Thank you for the video! so why is mr steeper than ar?
I'm not sure how to think about this is terms of slope. Here's an initial thought: what we want to explain is that the MR is not only less than AR, but increasingly so. This will give us the steeper slope. From this perspective, the answer may well be "because the price decreases": - as we increase quantity, the additional revenue we get from that additional quantity, gets smaller and smaller because the price we get for that additional unit gets smaller and smaller. Thus we get MR steeper (below our demand and increasinly the gap gets wider). Does that help? Another way to think about it is with elasticities and connecting it with the TR curve, but I'm not sure if that helps.
@@econhelp_official okok, thank you. From all the other videos I have watched, they have only proved it mathematically, so I was wandering if there is an actual explanation to it haha.
Yeah it's a good question, I hadn't thought about it in terms of the slope. I think it's really good to see this through the elasticities as well, that gets to the issue in another way. In the top half of the curve we go from perfectly elastic to unit elastic. This means that increasingly, as we decrease the price, the demand gets less responsive to changes in price (quantity does not change so dramatically given a decrease in the price). I'm pretty sure I go through that here: th-cam.com/video/uawjookzs4Y/w-d-xo.html... So then we link it all to the hump shaped TR curve. Another way to think about it is that MR can't ever be flatter than AR (otherwise at some point MR will become greater than AR, which we know from this video can't be true). So then the question is, why isn't it just the same slope? Well... the price is decreasing. each time we increase q, that part of MR that increases (because we sell one more unit) is getting smaller and smaller (since price decreases) so MR gets smaller more quickly (i.e. it is steep). ... I hope that makes sense, it's actually hard to articulate! :)
@@econhelp_official omg that was really helpful. thank you!
it really helps me tysm wish me luck for my final exam