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Evaluate: int(dx)/(1+3cos^(2)x)...

Evaluate: `int(dx)/(1+3cos^(2)x)`

Text Solution

Verified by Experts

Multiply Nr. And Dr. of given integral by `sec^(2)x`, we get
I = `int(sec^(2)x dx)(tan^(2)x+4) = 1/2tan^(-1)(tanx)/(2)+C`
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