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Find the Inverse Function f1\mathrm { f } ^ { - 1 }

Question 238

Multiple Choice

Find the inverse function f1\mathrm { f } ^ { - 1 } of the function f.
- f(x) =4tan(9x) f ( x ) = 4 \tan ( 9 x )


A) f1(x) =14tan1(x9) \mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \frac { 1 } { 4 } \tan ^ { - 1 } \left( \frac { \mathrm { x } } { 9 } \right)
B) f1(x) =14tan(9x) \mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \frac { 1 } { 4 \tan ( 9 \mathrm { x } ) }
C) f1(x) =4tan1(9x) \mathrm { f } ^ { - 1 } ( \mathrm { x } ) = 4 \tan ^ { - 1 } ( 9 \mathrm { x } )
D) f1(x) =19tan1(x4) \mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \frac { 1 } { 9 } \tan ^ { - 1 } \left( \frac { \mathrm { x } } { 4 } \right)

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