UPSC NDA I 2024 Mathematics Paper

Consider the following for the next two (02) items that follow :
Let f(x) and g(x) be two functions such that g(x)=x−‌

and f∘g(x)=x3−‌

Question : 86 of 120

Marks: +1, -0

What is f′′(x) equal to ?

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