Find the Derivative of the Function Using the Definition of Derivative

Multiple Choice

Find the derivative of the function using the definition of derivative.
- $$f ( x ) = - \frac { 2 } { x }$$

A) $f ^ { \prime } ( x ) = - 2 x ^ { 2 }$
B) $f ^ { \prime } ( x ) = - \frac { 2 } { x ^ { 2 } }$
C) $f ^ { \prime } ( x ) = - 2$
D) $f ^ { \prime } ( x ) = \frac { 2 } { x ^ { 2 } }$