A function satisfies f ( x 3 )=x^ 2 +x+1 Find the sum of all real numbers such that .

MATHEMATICS · Subjective · CBSE · Mathematics · Relations and Functions · Relations and Functions

Problem

A function ff satisfies f(x3)=x2+x+1f\left(\frac{x}{3}\right)=x^{2}+x+1 Find the sum of all real numbers zz such that f(3z)=7f(3 z)=7.

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