This week we learned the chain rule and i missed it and that kind of KILLED ME. I know how to do it now kind of so ill explain it. The formula for the chain rule is f’(g(x)) x g’(x). –Derivative outside, recopy inside, times derivative of inside. d/dx= [f(g(x)]

examples:
y=(5x-8)^4 The outer would be y=u^4, and the inner would be u=5x-8
Y=csc^3x The outer would be y=u^3, the inner would be u=csc x
Y=tan^2x

-First thing you do is bring the exponent to the front
2 tan x
-Then you have to multiply it by the derivative of tan
2 tan x x (sec^2x)
The answer would be 2 tanxsec^2x

I need to learn how to do the parallel and perpendicular slope problems.