Question

If f(x)=x^3+1/x^3 then the value of f(x)-f(1/x) is equal to?​

Answer 1

Answer:

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Answer 2

Answer:

$f(x) = {x}^{3} - \frac{1}{ {x}^{3} } \\ f( \frac{1}{x} = \frac{1}{ {x}^{3} } - \frac{1}{1} = \frac{1}{ {x}^{3} } - {x}^{3} \\ f( x) + f( \frac{1}{x} ) = {x}^{3} - \frac{1}{ {x}^{3} } + \frac{1}{ {x}^{3} } - {x}^{3} = 0$

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