Question

Evaluate the integral:
e^(5x)cos(e^5x) with an upper limit of 3 and lower limit of 0

Answer 1

substitution:

u = e^5x
du = 5*e^5x dx --> dx = du/5e^5x

--> integral (1/5) cos(u) du

Answer 2

I got sin e^5-sin 1/5 but I think it is supposed to be a decimal number i have no idea how to go about this

Answer 3

i think it should be sin(e^15) ....5x evaluated at x=3

yes i get 0.029, just use a calculator to get approximate answer, should be in radians

Answer 4

got it, thanks. I see where I went wrong.