int1/(x^4+5x^2+1)dx...

`int1/(x^4+5x^2+1)dx`

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The correct Answer is:

`1/2[(1)/(sqrt(7))tan^(-1)((x-1//x)/(sqrt(7)))-(1)/(sqrt(3))tan^(-1)((x+1//x)/(sqrt(3)))]+C`

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ARIHANT MATHS-INDEFINITE INTEGRAL -Exercise (Questions Asked In Previous 13 Years Exam)

int1/(x^4+5x^2+1)dx
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