JEE Main & Advanced
Sample Paper
JEE Main - Mock Test - 45
question_answer
If f (x) is a polynomial function such that\[f\left( x \right).\text{ }f\left( 1/x \right)=f\left( x \right)+f\left( 1/x \right)\] and \[f\left( 2 \right)=9\] then f(4) is equal to-