Question

help please

Answer 1

@alisyed5865,

Answer 2

@zepdrix

Answer 3

mmmm pie

Answer 4

lol

Answer 5

you don't need calculus for trig function questions like this
the max of cosine is 1, when x = 0 and the min is -1 when x = \(\pi\)

Answer 6

those are the critical points, \(0\) and \(\pi\)
no use it taking a derivative or any such silliness

Answer 7

stop stealing my question

Answer 8

really thank you so much @misty1212

Answer 9

\[\color\magenta\heartsuit\]

Answer 10

all i have is one more questopn

Answer 11

btw if you really want to make your silly math teacher happy, the derivative of \(f(x)=4\cos(x)\) is
\[f'(x)=-4\sin(x)\] which is zero at \(0\) and \(\pi\)