Ok. You're right that I don't use the chain rule but the product rule is used when differentiating dy/dx = dy/dz * cosx since there's 2 parts which both have variables.
Homework Statement
Differentiate twice: z = sinx
Homework Equations
Product rule
Chain rule
The Attempt at a Solution
dy/dx = dy/dz * dz/dx
dy/dx = dy/dz * cosx
Using the product rule:
d^2y/dx^2 = d^2y/dz^2 * cosx - dy/dz * sinx
According to the answer in the book...
Hi
I was reading about long range sniper bullets been affected by gyroscopic affect with the spin of the bullet. I was wondering if Bernoulli's principle could be applied to this, as the pressure at one side of the bullet is greater than the other (depending on the rotation).
Is this true and...
Hi
I wasn't sure whether this is technically homework or not but anyway.
I am building a miniature wind turbine for a basic project just for myself.
I was wondering if there was anyway for working out the voltage gained from the generator. I know this could be gained from using P = IV but...