First slide
Introduction to real valued functions
Question

If f(x) is a polynomial in x(>0) satisfying the equation

f(x)+f1x=f(x).f1x. and f(2)=7,then f(3)=_______

Moderate
Solution

f(x)f(1x)=f(x)+f1x  fx=1±xn givenf2=-71±2n=-7n=3 fx=1-x3

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