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Grade: 12
        How to solve this🙏Please answerIntegral dx/1-cos^4 x
9 months ago

Answers : (1)

Chandan
121 Points
							
take cos2x=t
therefore
-2sinxcosx=dt
denominator will be(1-t2)
put it as (1+t)(1-t)
\int2sinxcosx /(1+t)(1-t)dt
 but 1-t=1-cos2
1-t=sin2x
one sinx gets cancelled
and next is easy...............
9 months ago
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