Optimal. Leaf size=71 \[ \frac {2 n (1-x)^{n+1} (x+1)^{-n-1} \, _2F_1\left (2,n+1;n+2;\frac {1-x}{x+1}\right )}{n+1}-\frac {(1-x)^{n+1} (x+1)^{1-n}}{2 x^2} \]
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Rubi [A] time = 0.02, antiderivative size = 71, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, integrand size = 18, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.111, Rules used = {96, 131} \[ \frac {2 n (1-x)^{n+1} (x+1)^{-n-1} \, _2F_1\left (2,n+1;n+2;\frac {1-x}{x+1}\right )}{n+1}-\frac {(1-x)^{n+1} (x+1)^{1-n}}{2 x^2} \]
Antiderivative was successfully verified.
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Rule 96
Rule 131
Rubi steps
\begin {align*} \int \frac {(1-x)^n (1+x)^{-n}}{x^3} \, dx &=-\frac {(1-x)^{1+n} (1+x)^{1-n}}{2 x^2}-n \int \frac {(1-x)^n (1+x)^{-n}}{x^2} \, dx\\ &=-\frac {(1-x)^{1+n} (1+x)^{1-n}}{2 x^2}+\frac {2 n (1-x)^{1+n} (1+x)^{-1-n} \, _2F_1\left (2,1+n;2+n;\frac {1-x}{1+x}\right )}{1+n}\\ \end {align*}
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Mathematica [A] time = 0.02, size = 66, normalized size = 0.93 \[ \frac {(1-x)^{n+1} (x+1)^{-n-1} \left (4 n x^2 \, _2F_1\left (2,n+1;n+2;\frac {1-x}{x+1}\right )-(n+1) (x+1)^2\right )}{2 (n+1) x^2} \]
Antiderivative was successfully verified.
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fricas [F] time = 0.95, size = 0, normalized size = 0.00 \[ {\rm integral}\left (\frac {{\left (-x + 1\right )}^{n}}{{\left (x + 1\right )}^{n} x^{3}}, x\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {{\left (-x + 1\right )}^{n}}{{\left (x + 1\right )}^{n} x^{3}}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [F] time = 0.14, size = 0, normalized size = 0.00 \[ \int \frac {\left (-x +1\right )^{n} \left (x +1\right )^{-n}}{x^{3}}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {{\left (-x + 1\right )}^{n}}{{\left (x + 1\right )}^{n} x^{3}}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [F] time = 0.00, size = -1, normalized size = -0.01 \[ \int \frac {{\left (1-x\right )}^n}{x^3\,{\left (x+1\right )}^n} \,d x \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {\left (1 - x\right )^{n} \left (x + 1\right )^{- n}}{x^{3}}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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