For all real ( x, 4^{sin^2x}+ 4cos^{2x} ) is | Mathematics | SolveeIt | Solveeit

Today, August 18

Question

For all real $x, 4^{sin^2x}+ 4cos^{2x}$ is

A

$\ge 4$

B

$> 4$

C

$< 4$

D

None of these

Answer

$\ge 4$

Explanation

Solution

Answer (a) $\ge 4$