Let $f ( x ) = \tan ^ { - 1 } x$

question 10

Multiple Choice

Let $f ( x ) = \tan ^ { - 1 } x$ . Find the value of $f ^ { \prime } ( 1 )$ .

• A) \(- \frac { 1 } { 2 }\)
• B) \(\frac { 1 } { 2 }\)
• C) \(- \frac { 1 } { 3 }\)
• D)1
• E) \(\frac { 1 } { 3 }\)
• F) \(- \frac { 1 } { 4 }\)
• G) \(\frac { 1 } { 4 }\)
• H) \(- 1\)

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