Let $f ( x ) = x - e ^ { x }$ . Then $f ^ { \prime } ( x )

Name: Let $f ( x ) = x - e ^ { x }$ . Then $f ^ { \prime } ( x ) < 0$ for all x in A) $( - \infty , \infty )$ B) $( - \infty , 0 )$ C) $( 0 , \infty )$ D) $( - \infty , e )$ E) $\left( - \infty , e ^ { 2 } \right)$
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Question

Let $f ( x ) = x - e ^ { x }$ . Then $f ^ { \prime } ( x ) < 0$ for all x in

A) $( - \infty , \infty )$
B) $( - \infty , 0 )$
C) $( 0 , \infty )$
D) $( - \infty , e )$
E) $\left( - \infty , e ^ { 2 } \right)$

Quizplus · Accepted Answer

The Answer of Let $f ( x ) = x - e ^ { x }$ . Then $f ^ { \prime } ( x ) < 0$ for all x in

A) $( - \infty , \infty )$
B) $( - \infty , 0 )$
C) $( 0 , \infty )$
D) $( - \infty , e )$
E) $\left( - \infty , e ^ { 2 } \right)$

Let f(x)=x−exf ( x ) = x - e ^ { x }f(x)=x−ex

Let $f ( x ) = x - e ^ { x }$