Recent questions tagged integrals

1 votes
1 answer
1
$\displaystyle S = \int_{0}^{2\pi } \sqrt{4\cos^{2}t +\sin^{2}t} \, \, dt$Please explain how to solve it.
0 votes
1 answer
2
I'm getting "not defined" ..
1 votes
3 answers
3
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