Q.
∫sin2xd(tanx) is equal to
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a
2ln|cosx|+C
b
ln|cosx|+C
c
2ln|secx|+C
d
ln|secx|+C
answer is C.
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Detailed Solution
I=∫sin2x⋅d(tanx)=∫sin2x⋅sec2xdx=2∫tanxdx=2ln|secx|+C
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