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inte^(tanx)sec^(2)xdx=?...

`inte^(tanx)sec^(2)xdx=?`

A

`e^(tanx)+tanx+C`

B

`e^(tanx)*tanx+C`

C

`e^(tanx)+C`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
Put `tanx=t andsec^(2)xdx=dt`.
`:." "I=inte^(t)dt=e^(t)+C=e^(tanx)+C`.
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