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Let f(x)=sec1(ex)f ( x ) = \sec ^ { - 1 } \left( e ^ { x } \right)

Question 15

Multiple Choice

Let f(x) =sec1(ex) f ( x ) = \sec ^ { - 1 } \left( e ^ { x } \right) Then f(x) f ^ { \prime } ( x ) is


A) 1e2x1\frac { 1 } { \sqrt { e ^ { 2 x } - 1 } }
B) 1exe2x1- \frac { 1 } { e ^ { x } \sqrt { e ^ { 2 x } - 1 } }
C) 1ex(e2x+1) \frac { 1 } { e ^ { x } \left( e ^ { 2 x } + 1 \right) }
D) 1ex(e2x+1) - \frac { 1 } { e ^ { x } \left( e ^ { 2 x } + 1 \right) }
E) exe2x1\frac { e ^ { x } } { \sqrt { e ^ { 2 x } - 1 } }

Correct Answer:

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