@@fatimaambreen there is given quadratic equation where y=-x² - 6x - 5 vertex form is a*(x-h)²+k -h is value of x and k is the value of y -1 is represented as a Quadratic form is ax²-bx-c The given one has -x² where a is -1
@@F1RSTFACT Yes look you were asked to find f(g((x)) F(x) = blalbla G(x)= blabla The first thing you must do is to plug the g(x) and then f{x} Understood?
I would like to ask another question, in this excercise 24:10 . Why does the equation have roots if it doesn't touch the x-axis? Maybe I'm mixing concepts but I haven't quite figured that out yet
@@AlexisLopez-ev5inthe only way it’s possible is if you introduce imaginary numbers: i = square root of -1 Which would give you the roots : x1 = 2+2i and x2 = 2 -2i
let me explain, when x=0 Y will be equel to 4. So one of our point is (0,4). When y=0, X will be equl to -4/5(or -0.8), so our second point is (-0.8,0). by puting these 2 point on a graph we can draw our lovely little graph, I hope this explanation will help you to understand this topic. In general, in order to be able to draw a linear graph we only need the information of 2 points, and the easiest way to find the coordinate of them is puting 0 to either of variables and finding the other one(because 0 automatically elemant anything next to it)
Hey! if you want to maximize your math section, I recommend watching this video to understand how to study for the math section th-cam.com/video/I_Xdy92Tdqw/w-d-xo.html And follow this study plan: th-cam.com/video/SjhQL5afilI/w-d-xo.html
the equation initially had a negative (-) sign in front of it [-x^2-6x-5] and when he made it into -[x^2+6x+5] (making all the coefficients positive), he factored out the negative one and the equation became -[x^2+6x+5]
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Videos Mentioned
29:33 - Discriminant Guide (th-cam.com/video/_Yst9VbRR7U/w-d-xo.html)
31:55 - Matching Rule Guide (th-cam.com/video/yYeIFsby4tQ/w-d-xo.html)
Thanks
can we just appreciate how he has a paid course but he still releases these helpful videos for people who can't afford it
29:22 do u know where that -1 came from in the vertex form
@@fatimaambreen there is given quadratic equation where y=-x² - 6x - 5
vertex form is a*(x-h)²+k
-h is value of x
and k is the value of y
-1 is represented as a
Quadratic form is ax²-bx-c
The given one has -x² where a is -1
@@ruslanmusekeev8927 oh thank u now i finally understand it
No kidding
Hey!! In composite functions F(G(x)) should be = 2(-5x+1)+3, NOT -5(2x+3)+1
Exactly ❤
that's what I think
Why can you explain pls !!!!!!!!!!!!!!!!!
Exactly. I thought while he was writing the opposite form of equation.
@@F1RSTFACT
Yes look you were asked to find f(g((x))
F(x) = blalbla
G(x)= blabla
The first thing you must do is to plug the g(x) and then f{x}
Understood?
2:40 Wouldn't that be 2(-5x+1)+3 instead?
I would like to ask another question, in this excercise 24:10 . Why does the equation have roots if it doesn't touch the x-axis? Maybe I'm mixing concepts but I haven't quite figured that out yet
Yeah it’s 2(-5x+1) he did it wrong
@@AlexisLopez-ev5inthe only way it’s possible is if you introduce imaginary numbers: i = square root of -1
Which would give you the roots :
x1 = 2+2i and x2 = 2 -2i
2:45 is misleading! f(g(x)) is incorrect. What you wrote down there is indeed g(f(x)).
30:41 the answer is y=1 and its not on the answer bullets
Thanks i was wondering lol
I was struggling with these topics for a long time. Thank youu for this video
brooooo i got form 560- 670 brrooo. just now. becauseI i watched 2 of ur videos .TMR is my test Jesuss.
Sameeee. August DSAT tomorrow and I have 630 in math on my last practice test
2:50 Reverse!! You did G(F(x)) there.
yeah he forget that i was also confused for second aswell.
@@yusufkaya1393 10 years of teaching and he still did that?!!
Do more Math concepts
Thanks so much for the videos
Keep up the good work
2:50 bro at least mention the error in the description
2:51 isn't it G(F(x) that you did show? F(G(x) is 2(-5x+1)+3= -10x+1. Please help
how come no one else found that error :(
@@ankur9662 I think they did. You can find it in the comments
i thought i was doing it the wrong way ;-;
pls make more math vids i have my dsat in may and i love your vids
Thank you for the full review
Can you please do full review for advanced?
question 11 : desmos for the digital one ..
10 years Experience ! ,
I thought you were about 20 -22 years of age on first look
Thank you God bless you 🙏🤗
@JohnSAT
Thank you very much. Your lesson is the best. Just perfect
Hi John! Is this applicable for DSAT as well?
Absolutely. SAT and DSAT are essentially the same exam testing you on the same thing.
@@JohnSAT Thanks! Your videos are way too helpful
At point of intersection between two lines, the value of y is the same.
Thank u sooo much,May God Bless you ❤
Use desmos for systems of equations
Please teach me how to plot graph of y=5x+4, by simple observation
let me explain, when x=0 Y will be equel to 4. So one of our point is (0,4). When y=0, X will be equl to -4/5(or -0.8), so our second point is (-0.8,0). by puting these 2 point on a graph we can draw our lovely little graph, I hope this explanation will help you to understand this topic. In general, in order to be able to draw a linear graph we only need the information of 2 points, and the easiest way to find the coordinate of them is puting 0 to either of variables and finding the other one(because 0 automatically elemant anything next to it)
you have a mistake or you confused with f(g(x))
Your videos are very helpful thank u so much for ur hard work👍👍
29:22 do u know where that -1 came from in the vertex form
A new subscriber 🙋🏻♀️
2:23 Composite functions you did wrong please student see other video for composite functions
12:18 - Lines
How can I inter ur course
18:22 TS
thank you so muchhh
you're very welcome!
Who’s taking the digital sat in 4 nov ?
Hello bro b=2+b is only =2 b is cut not value is 4😂
❤❤❤
Make a vedio on linear and exponential growth plzzzz ❤
Hi john, How i can start to prepare for Math SAT like which basics i need start to learn and from which book or website i can study I'm weak in math
Hey! if you want to maximize your math section, I recommend watching this video to understand how to study for the math section th-cam.com/video/I_Xdy92Tdqw/w-d-xo.html And follow this study plan: th-cam.com/video/SjhQL5afilI/w-d-xo.html
For the basics needed for the SAT, look at the first 5 concepts listed here: www.admissionhackers.com/25concepts
@@JohnSAT Thanks
29:22 do u know where that -1 came from in the vertex form
The rule is y=a(x-h)^2+k and in the equation a=-1 so you just plug it in
the equation initially had a negative (-) sign in front of it [-x^2-6x-5] and when he made it into -[x^2+6x+5] (making all the coefficients positive), he factored out the negative one and the equation became -[x^2+6x+5]
YO... Are these also applicable for the Digital SAT?
yep
w vid
any MOROCCAN HERE ??
W
Plz suggested me an sat English Channel.... And suggests me some topic about english...so that i can easily score Inn english 600
..
dismos solves everything
What about your brain. What is it doing in your head
@@SanjarAbdullayev-x8c😂😂
i don't have last name, i am facing problem in collage board account creation plz help me out so that i can take october SAT Exam plz help me brother
you did the opposite at the start f(g(x))