Compute $f ^ { \prime } ( 5 )$ $f ( x ) = \frac { 2.1 } { x }$

Multiple Choice

Compute $f ^ { \prime } ( 5 )$ . $f ( x ) = \frac { 2.1 } { x }$

A) $f ^ { \prime } ( 5 ) = - 0.42$
B) $f ^ { \prime } ( 5 ) = - 0.084$
C) $f ^ { \prime } ( 5 ) = 0.084$
D) $f ^ { \prime } ( 5 ) = 1$
E) $f ^ { \prime } ( 5 ) = 2.1$