Question

Find the critical point of f(x)=sin^2x+cosx.

Find the absolute maximum and minimum values of f on the given interval

Answer 1

find the derivative

Answer 2

What is the interval?

Answer 3

2sinxcosx - sinx = 0
sinx (2cosx -1) = 0
sinx = 0 and cosx = 1/2

Answer 4

idk thats the question i got he same thing him1618

Answer 5

so wts wrong?

Answer 6

whats the interval??

Answer 7

i just was checking to see if i was doing the right thing...my lecturer probably forgot to indicate one

Answer 8

so then its fine

Answer 9

thanks him1618!

Answer 10

no problem