SAT1000 - P159

Algebra Level 3

If f(x)f(x) and g(x)g(x) are functions defined at R\mathbb R, and equation xf(g(x))=0x-f(g(x))=0 has real roots.

Then which cannot be the function g(f(x))g(f(x))?


Have a look at my problem set: SAT 1000 problems

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