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Integral of x/sqrt(1-x^2)
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Integral of 1/(1+x^2)
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x / (x^2 + 1) dx, Evaluate the indefinite integral.
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Integral of x/sqrt(1+x^2) (substitution)
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Integral of 1/(x+1)^2 (substitution)
the integral of 1/(1-x^2) (hyperbolic functions vs partial fractions?)