Find the Inverse Function F-1 of the Function F $$f ( x ) = - 4 \cos ( 10 x + 7 )$$

question 26

Multiple Choice

Find the inverse function f-1 of the function f.
- $$f ( x ) = - 4 \cos ( 10 x + 7 )$$

• A) \(f ^ { - 1 } ( x ) = - 4 \cos ^ { - 1 } ( 10 x + 7 )\)
• B) \(\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \frac { 1 } { 4 } \left[ \cos ^ { - 1 } \left( \frac { \mathrm { x } } { 10 } \right) - 7 \right]\)
• C) \(\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \frac { 1 } { 10 } \left[ \cos ^ { - 1 } \left( \frac { \mathrm { x } } { 4 } \right) - 7 \right]\)
• D) \(\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = - \frac { 1 } { 10 } \left[ \cos ^ { - 1 } \left( \frac { \mathrm { x } } { 4 } \right) + 7 \right]\)

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