Compute $f ^ { \prime } ( a )$ for $a = 3$ .
$f ( x ) = x ^ { 2 } - 5$
A)-6
B) 6
C) -9
D) 3
E) 8

Name: Compute $f ^ { \prime } ( a )$ for $a = 3$ . $f ( x ) = x ^ { 2 } - 5$ A)-6 B) 6 C) -9 D) 3 E) 8
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Question

Compute $f ^ { \prime } ( a )$ for $a = 3$ .  
  $f ( x ) = x ^ { 2 } - 5$  
A)-6
B) 6
C) -9
D) 3
E) 8

Quizplus · Accepted Answer

The derivative of $f(x) = x^2 - 5$ with respect to $x$ is $f'(x) = 2x$. Substituting $a = 3$ into $f'(x)$, we get $f'(3) = 2(3) = 6$.

Compute f′(a)f ^ { \prime } ( a )f′(a) For a=3a = 3a=3

Compute $f ^ { \prime } ( a )$ For $a = 3$