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Evaluate the integral: ∫tan3x sec2 x dx |
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Answer» Suppose I = ∫tan3x sec2 x dx Suppose tan x = t, now sec2 x dx = dt On substituting the value of x I = ∫t3 dt On integrating I = t4/4 + c On substituting the value of t I = tan4x/4 + c |
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