1.

`inte^(cos^(2))sin2xdx=?`A. `e^(cos^(2)x)+C`B. `-e^(cos^(2)x)+C`C. `e^(sin^(2)x)+C`D. none of these

Answer» Correct Answer - B
Put `cos^(2)x=t and-2cosxsinxdx=dt`.
`:." "I=-inte^(t)dt=-e^(t)+C=-e^(cos^(2))+C`.


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