$$\text { Find the formula for } d f ^ { - 1 } / d x \text {. }$$

question 351

Multiple Choice

$$\text { Find the formula for } d f ^ { - 1 } / d x \text {. }$$
- $$f ( x ) = 243 x ^ { 5 }$$

• A) \(\frac { x ^ { 1 / 5 } } { 3 }\)
• B) \(\frac { 1 } { 15 x ^ { 4 / 5 } }\)
• C) \(1215 x ^ { 4 }\)
• D) \(15 x ^ { 4 }\)

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