Question

y=cosx/5 on the interval [0,10pi] specify the int. in which the funct. is increasing, how do i set up this prob? is there a formula?

Answer 1

find the derivative of y w.r.t x.(i.e dy/dx) and then find the values for which dy/dx is positive. This is because for a function to be increasing, its derivative should be positive.

Answer 2

im still a little lost, could u show me?

Answer 3

find the derivative first.

Answer 4

am i looking for the der. of cosx?