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sin2xd(tanx) is equal to 

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a
2ln⁡|cos⁡x|+C
b
ln⁡|cos⁡x|+C
c
2ln⁡|sec⁡x|+C
d
ln⁡|sec⁡x|+C

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detailed solution

Correct option is C

I=∫sin⁡2x⋅d(tan⁡x)=∫sin⁡2x⋅sec2⁡xdx=2∫tan⁡xdx=2ln⁡|sec⁡x|+C


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