A) \[f(-x)\]
B) \[\frac{1}{f(x)}\]
C) \[{{\left( f\left( \frac{1}{x} \right) \right)}^{2}}\]
D) \[f(x)\]
Correct Answer: D
Solution :
\[{{x}^{3}}f\left( \frac{1}{x} \right)={{x}^{3}}\,\left[ \frac{4}{{{x}^{3}}}+\frac{3}{{{x}^{2}}}+\frac{3}{x}+4 \right]\] \[=4+3x+3{{x}^{2}}+4{{x}^{3}}=f(x)\].
You need to login to perform this action.
You will be redirected in
3 sec
