JEE Main & Advanced
Mathematics
Functions
Question Bank
Numerical Value Type Questions - Function
question_answer
If \[f\left( x \right)\] is a polynomial function such that \[f\left( x \right).\,f\left( 1/x \right)=f\left( x \right)+f\left( 1/x \right)\]and \[f\left( 2 \right)=9\] then find value of \[f\left( 4. \right)\]