Question

if f(x+1/x)= x^2+1/x^2 find f(x^3)

Answer 1

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So....as described...

since, f(x+1/x) = (x + 1/x)² - 2(x)(1/x) = (x+1/x)² - 2

=> f( ${x}^{3}$) = ( ${x}^{3}$)² - 2

=> f( ${x}^{3}$) = ${x}^{6}$

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Hope it helps!!...
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