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If $f ( x ) = \frac { x } { \tan x } , \text { find } f ^ { \prime } \left( \frac { \pi } { 4 } \right)$

Question 117

Multiple Choice

If $f ( x ) = \frac { x } { \tan x } , \text { find } f ^ { \prime } \left( \frac { \pi } { 4 } \right)$ .

A) $\frac { 2 - \pi } { 2 }$

B) $\frac { 1 - \pi } { 2 }$
C) $1 - \pi$
D) $\frac { \pi } { 2 }$
E) $1 - 2 \pi$
F) $2 - \pi$

G) $2 - 2 \pi$

H) $- \pi$

If f(x)=xtan⁡x, find f′(π4)f ( x ) = \frac { x } { \tan x } , \text { find } f ^ { \prime } \left( \frac { \pi } { 4 } \right)f(x)=tanxx​, find f′(4π​)

Multiple Choice

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If $f ( x ) = \frac { x } { \tan x } , \text { find } f ^ { \prime } \left( \frac { \pi } { 4 } \right)$

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