Question

F r tor defined by f(x)=x3
Then f-1 equals to?

Answer 1

${\mathtt {\overbrace {\underbrace{Hey\: Mate}}}}$

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$\sf{f(x)\:=\: \ x^{3}}$

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$\small\tt{Put\: value\: of \:x \:=\: -1}$

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$\sf{f(-1)\:=\: \ (-1)^{3}}$

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$\sf{f(-1)\:=\: -1}$

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$\sf{(-1)^{n}}$

★If n is positive then value will be positive

★If n is negative then value will also negative

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