Question

let g(X) = abs(cosx-1) the maximum value attained by g on the closed interval [0, 2pi] is for x equal to
a. -1
b. 0
c. pi/2
d. 2
e. pi

Answer 1

It is 2. for x=pi... cos x -1 = -2... so abs (Cos x -2) = 2

Answer 2

d. 2

Answer 3

how do you know?

Answer 4

@muah 143 didn't you see my explanation for the answer?

Answer 5

yeah i did...i was actually trying to see RyanL. point of view

Answer 6

for any real number \[-1\le\cos x \le1\]\[-2\le\cos x -1\le0\]\[0\le|\cos x -1|\le2\]

Answer 7

ohhh thanks

Answer 8

yw :)

Answer 9

:)