Question

If $f(x)=1+3x^2+5x^4+7x^6\dots \dots +2015x^{2014}$ and $f(2)=5$, then $f(-2)$ is equal to

• A. 5
• B. 7
• C. 3
• D. -7

Answer 1

Answer: (A)

$\Theta f(x)-f(-x)=0$
$\Rightarrow f(x)=f(-x)$
$\therefore f(-2)=5$