Question

plz.solve this question​

Answer 1

Explanation:

put ,

$\sqrt{t} \: + 3 = x$

so, differentiate,

$\frac{1}{2 \sqrt{t} } \: dt = dx$

now,

$2int \: \frac{1}{2 \sqrt{t} } \: cos( \sqrt{t} + 3) \: dt$

put the above results,

$2 \: int \: cos \: x \: dx$

$2( sin \: x) \:$

now replace x by

$( \sqrt{t} + 3)$

so,

$2( sin( \sqrt{t} + 3))$

HOPE IT HEPS YOU.

mark it as brainliest.