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Strength in Numbers Tutoring
เข้าร่วมเมื่อ 16 มี.ค. 2020
We are Strength in Numbers, the leading tutoring and test prep solution for Needham and surrounding towns. This TH-cam channel is used to share videos of homework help solutions, meant to help you understand math and science topics! Check us out online at www.sntutoring.com.
Needham AP Calculus: Locating Critical Points and Inflection Points
Yikes!!! This is a very hard problem. But hard ones are the GOOD problems, because they force you to use all the tools at your disposal.
In this problem, we are faced with an unknown constant "k" that causes a function to exhibit desirable behavior. Although we stop short of locating a for-sure inflection point, I wanted to call it at a reasonable point. Can YOU finish the problem by confirming that the found value for k actually causes an inflection point instead of a harmless momentary leveling of the second derivative?
In this problem, we are faced with an unknown constant "k" that causes a function to exhibit desirable behavior. Although we stop short of locating a for-sure inflection point, I wanted to call it at a reasonable point. Can YOU finish the problem by confirming that the found value for k actually causes an inflection point instead of a harmless momentary leveling of the second derivative?
มุมมอง: 11
วีดีโอ
Implicit Differentiation: Basics and Problem-Solving
มุมมอง 178 หลายเดือนก่อน
This video is intended to give some of the basics about implicit differentiation, but also to address more difficult stuff that has to do with advanced approaches.
Solving a System of Linear Equations Using Inverse Matrices
มุมมอง 1411 หลายเดือนก่อน
This not-very-short video goes in depth as to: - What matrices are - How they can be multiplied - What this multiplication ability means for solving 2x2 systems of equations What is NOT done is a lot of computational examples, simply because that takes a while and the video was already super long!!! If you'd like help with your math homework, please get in touch with us at Strength in Numbers: ...
Needham Calculus: Area Between Two Trig Functions - Very Hard
มุมมอง 562 ปีที่แล้ว
This problem is enough to make you want to tear your hair out - which, of course, is why I love it. In this video, I pursue an EXACT solution to this problem, which means no decimals at all. I know it's super long and involved, but that's because I take a lot of time to go over the nitty-gritty details of how to do it. Along the way, we encounter long-neglected trig identities, ways of resolvin...
Needham Physics: Two Blocks Compressing Spring
มุมมอง 1222 ปีที่แล้ว
What a beast of a problem! Important to keep focused on basics here. It turns out that just by monitoring what type of energy you're looking at, as well as smartly applying conservation of energy and momentum, this problem ends up not being too terrible. Want help with your homework? Give us a shout! We're always happy to help more students. For private tutoring visit us at www.sntutoring.com.
Needham Physics: Solve for Coefficient of Friction
มุมมอง 122 ปีที่แล้ว
Here, we start to tie together kinematics with dynamics. Kinematics is the study of motion, without reference to the forces that cause that motion. But dynamics brings in forces, which are the things capable of causing motion in the first place. Without dynamics, there would BE no kinematics! So it's a good link to have. The link between dynamics and kinematics (between forces and motion) is pr...
Needham Physics: Pole Vaulter, Known Horizontal and Vertical Displacement
มุมมอง 252 ปีที่แล้ว
Kinematics is a sleuthing business. Find the clues and follow where they lead. In this particular case, you know how high the person travels, and you know how far they travel horizontally... how can you turn that into knowledge about the initial velocity and launch angle? Watch to find out! Want more awesome help with your homework? Give us a shout at www.sntutoring.com and we'll get you set up...
Needham Physics: Trig Ratios for Accelerations Instead of Forces
มุมมอง 92 ปีที่แล้ว
Once again, focusing on acceleration instead of forces. Not a conventional method, but it works under the right circumstances. Like this video? Want awesome help with your homework problems? Let us know! Give us a shout at www.sntutoring.com.
Needham Physics: Slide Down Ramp Focus on Acceleration
มุมมอง 92 ปีที่แล้ว
Here, we cut out the middle man and focus just on the acceleration. Mostly, we won't be doing this, because we will be using forces instead of bare accelerations. That's more versatile, because it allows us to more easily take complex forces into account (if you have multiple forces acting horizontally, for example - which is very common). But just so we have every solution method available, he...
Needham Physics: Explain Newton's Second Law
มุมมอง 82 ปีที่แล้ว
Newton's second law is a very simple but powerful idea. How hard you push on something determines how fast it moves - but it also depends on how much mass the thing has. It's very intuitive. If you push on something twice as hard, it will move twice as fast. But if you push on two objects with the same force, and one of them has twice the mass of the other, the one with the larger mass will mov...
Needham Physics: Calculate Net Force and Acceleration Easy
มุมมอง 112 ปีที่แล้ว
This one ain't so bad. If you push on something one way, and also the other way, the way you determine the resultant or "net" force is by algebraically adding the two forces ("algebraically adding" means that you combine them, paying attention to whether they're positive or negative.) Like this video? Want awesome help with your homework problems? Let us know! Give us a shout at www.sntutoring....
Needham Physics: Calculate Net Force and Acceleration At Angle Harder
มุมมอง 132 ปีที่แล้ว
A little tougher this time. Here, we look at a problem involving forces applied at an angle, and use the force and the angle to determine the acceleration on an object (plus, why it doesn't simply lift off the ground!) Like this video? Want awesome help with your homework problems? Let us know! Give us a shout at www.sntutoring.com.
Needham AP Calculus: Derivative of Function Equals Original Function
มุมมอง 53 ปีที่แล้ว
There is one function - just one! - that is *its own derivative*. Later in the class, you'll get to write this function in a different way, but this cool result is already possible to show using just the power rule and nothing else. Like this video? Want more awesome help? Give us a shout at www.sntutoring.com and we can get you set up to ace your class!
Needham Physics: Heavy Object Lifted by Motor and Dropped
มุมมอง 73 ปีที่แล้ว
Today's lesson is more or less the idea that you shouldn't stand underneath things being lifted by ropes. They're always just about to break. True story. Like this awesome video? Want awesome help for your awesome homework? (Because, you know, you're awesome?) Give us a shout at www.sntutoring.com and we can get you set up with private tutoring!
Needham Physics: Box Horizontally Accelerated by Spring and Then Slowed by Friction
มุมมอง 93 ปีที่แล้ว
There are lots of steps in this problem. Which is good! It gives you practice with what to apply and when. Like this video? Want super awesome help with your physics class? Drop us a line at www.sntutoring.com and we'll get you set up with private tutoring. :)
Needham AP Calculus: Making a Piecewise Function Continuous
มุมมอง 263 ปีที่แล้ว
Needham AP Calculus: Making a Piecewise Function Continuous
Needham AP Calculus: Function |x|/x Discontinuous At x=0
มุมมอง 173 ปีที่แล้ว
Needham AP Calculus: Function |x|/x Discontinuous At x=0
Physics: Constant Acceleration Ball Thrown in Air
มุมมอง 983 ปีที่แล้ว
Physics: Constant Acceleration Ball Thrown in Air
Physics: Constant Acceleration - Ball Bouncing off Spring
มุมมอง 153 ปีที่แล้ว
Physics: Constant Acceleration - Ball Bouncing off Spring
Needham Multivariable Calculus: Divergence Theorem, Easy
มุมมอง 243 ปีที่แล้ว
Needham Multivariable Calculus: Divergence Theorem, Easy
Needham Multivariable Calculus: Divergence Theorem, Medium
มุมมอง 143 ปีที่แล้ว
Needham Multivariable Calculus: Divergence Theorem, Medium
Needham Multivariable Calculus: Divergence Theorem, Hard
มุมมอง 53 ปีที่แล้ว
Needham Multivariable Calculus: Divergence Theorem, Hard
Needham Multivariable Calculus: Stokes's Theorem, Converting Surface Integral to Line Integral
มุมมอง 363 ปีที่แล้ว
Needham Multivariable Calculus: Stokes's Theorem, Converting Surface Integral to Line Integral
Needham Multivariable Calculus: Stokes's Theorem, Converting Line Integral to Surface Integral
มุมมอง 1013 ปีที่แล้ว
Needham Multivariable Calculus: Stokes's Theorem, Converting Line Integral to Surface Integral
Needham Multivariable Calculus: Surface Integral of a Vector Field
มุมมอง 163 ปีที่แล้ว
Needham Multivariable Calculus: Surface Integral of a Vector Field
Needham Multivariable Calculus: Surface Integral of a Scalar Field
มุมมอง 53 ปีที่แล้ว
Needham Multivariable Calculus: Surface Integral of a Scalar Field
Needham Multivariable Calculus: Using Green's Theorem to Calculate Line Integral
มุมมอง 83 ปีที่แล้ว
Needham Multivariable Calculus: Using Green's Theorem to Calculate Line Integral
Needham Multivariable Calculus: Using Curl to Determine Conservative Vector Fields
มุมมอง 163 ปีที่แล้ว
Needham Multivariable Calculus: Using Curl to Determine Conservative Vector Fields
Needham Multivariable Calculus: Evaluating a Line Integral Using Fundamental Theorem
มุมมอง 113 ปีที่แล้ว
Needham Multivariable Calculus: Evaluating a Line Integral Using Fundamental Theorem
Needham Multivariable Calculus: Line Integral With dx and dy Separate
มุมมอง 93 ปีที่แล้ว
Needham Multivariable Calculus: Line Integral With dx and dy Separate