2 ( ^2 x- ^2 x ) ^2 x+ ^2 x dx = - Vidyadip

MCQ

$\int \frac{2\left(\cos ^2 x-\sin ^2 x\right)}{\cos ^2 x+\sin ^2 x} dx =$

✓
$\sin 2 x+c$
B
$\cos 2 x+c$
C
$\tan 2 x+c$
D
$2 \sin 2 x+c$

✓

Answer

Correct option: A.

$\sin 2 x+c$

sin 2x + c

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