Question

Derivatives Review: Find the derivative: cos((x^2)+1)+m

Answer 1

why would m be zero?

Answer 2

If m is a constant, then its derivative is 0.

In that case, the derivative of cos(x^2 + 1) is

-2x (sin(x^2+1))

Answer 3

how do i know if its a constant or variable?

Answer 4

Usually it would say so..but if it doesnt, then you can assume it is a constant.

Answer 5

thanks :)