Question

so lost, could someone work this out for me: function y=cos x/5 on the interval [0,10pi] specify the int. in which the function is increasing.

Answer 1

is it y=(cosx)/5 or cos(x/5)

Answer 2

cos (x/5)

Answer 3

Strictly increasing:\[5\pi <x<10\pi \]

Answer 4

robto. how did u get that tho?