Find all critical numbers for the function $f ( x ) = 2 \sin x - x \text { for } 0

Question

Find all critical numbers for the function $f ( x ) = 2 \sin x - x \text { for } 0 < x < \pi$ .
A) $\frac { \pi } { 2 }$
B)$\frac { 3 \pi } { 2 }$
C)0
D)None of these
$\frac { 3 \pi } { 2 }$
E) $\frac { \pi } { 3 }$ 
F) $\frac { \pi } { 4 }$
G)-1
H)No critical numbers

Quizplus · Accepted Answer

The Answer of Find all critical numbers for the function $f ( x ) = 2 \sin x - x \text { for } 0 < x < \pi$ .
A) $\frac { \pi } { 2 }$
B)$\frac { 3 \pi } { 2 }$
C)0
D)None of these
$\frac { 3 \pi } { 2 }$
E) $\frac { \pi } { 3 }$ 
F) $\frac { \pi } { 4 }$
G)-1
H)No critical numbers

Find All Critical Numbers for the Function f(x)=2sin⁡x−x for 0<x<πf ( x ) = 2 \sin x - x \text { for } 0 < x < \pif(x)=2sinx−x for 0<x<π

Find All Critical Numbers for the Function $f ( x ) = 2 \sin x - x \text { for } 0 < x < \pi$