Optimal. Leaf size=86 \[ -\frac {2}{\left (1-\sqrt {\frac {1-a x}{1+a x}}\right )^2}+\frac {2}{1-\sqrt {\frac {1-a x}{1+a x}}}-\log (1+a x)-2 \log \left (1-\sqrt {\frac {1-a x}{1+a x}}\right ) \]
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Rubi [A]
time = 0.30, antiderivative size = 86, normalized size of antiderivative = 1.00, number of steps
used = 5, number of rules used = 3, integrand size = 12, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.250, Rules used = {6472, 1643,
266} \begin {gather*} \frac {2}{1-\sqrt {\frac {1-a x}{a x+1}}}-\frac {2}{\left (1-\sqrt {\frac {1-a x}{a x+1}}\right )^2}-\log (a x+1)-2 \log \left (1-\sqrt {\frac {1-a x}{a x+1}}\right ) \end {gather*}
Antiderivative was successfully verified.
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Rule 266
Rule 1643
Rule 6472
Rubi steps
\begin {align*} \int \frac {e^{2 \text {sech}^{-1}(a x)}}{x} \, dx &=\int \frac {\left (\frac {1}{a x}+\sqrt {\frac {1-a x}{1+a x}}+\frac {\sqrt {\frac {1-a x}{1+a x}}}{a x}\right )^2}{x} \, dx\\ &=4 \text {Subst}\left (\int \frac {x (1+x)}{(-1+x)^3 \left (1+x^2\right )} \, dx,x,\sqrt {\frac {1-a x}{1+a x}}\right )\\ &=4 \text {Subst}\left (\int \left (\frac {1}{(-1+x)^3}+\frac {1}{2 (-1+x)^2}-\frac {1}{2 (-1+x)}+\frac {x}{2 \left (1+x^2\right )}\right ) \, dx,x,\sqrt {\frac {1-a x}{1+a x}}\right )\\ &=-\frac {2}{\left (1-\sqrt {\frac {1-a x}{1+a x}}\right )^2}+\frac {2}{1-\sqrt {\frac {1-a x}{1+a x}}}-2 \log \left (1-\sqrt {\frac {1-a x}{1+a x}}\right )+2 \text {Subst}\left (\int \frac {x}{1+x^2} \, dx,x,\sqrt {\frac {1-a x}{1+a x}}\right )\\ &=-\frac {2}{\left (1-\sqrt {\frac {1-a x}{1+a x}}\right )^2}+\frac {2}{1-\sqrt {\frac {1-a x}{1+a x}}}-\log (1+a x)-2 \log \left (1-\sqrt {\frac {1-a x}{1+a x}}\right )\\ \end {align*}
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Mathematica [A]
time = 0.04, size = 86, normalized size = 1.00 \begin {gather*} -\frac {1}{a^2 x^2}-\frac {\sqrt {\frac {1-a x}{1+a x}} (1+a x)}{a^2 x^2}-2 \log (x)+\log \left (1+\sqrt {\frac {1-a x}{1+a x}}+a x \sqrt {\frac {1-a x}{1+a x}}\right ) \end {gather*}
Warning: Unable to verify antiderivative.
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Maple [A]
time = 0.04, size = 110, normalized size = 1.28
method | result | size |
default | \(\frac {-\frac {1}{2 x^{2}}-a^{2} \ln \left (x \right )}{a^{2}}-\frac {\sqrt {\frac {a x +1}{a x}}\, \sqrt {-\frac {a x -1}{a x}}\, \left (-a^{2} x^{2} \arctanh \left (\frac {1}{\sqrt {-a^{2} x^{2}+1}}\right )+\sqrt {-a^{2} x^{2}+1}\right )}{a x \sqrt {-a^{2} x^{2}+1}}-\frac {1}{2 a^{2} x^{2}}\) | \(110\) |
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 \begin {gather*} \text {Failed to integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.35, size = 138, normalized size = 1.60 \begin {gather*} \frac {a^{2} x^{2} \log \left (a x \sqrt {\frac {a x + 1}{a x}} \sqrt {-\frac {a x - 1}{a x}} + 1\right ) - a^{2} x^{2} \log \left (a x \sqrt {\frac {a x + 1}{a x}} \sqrt {-\frac {a x - 1}{a x}} - 1\right ) - 2 \, a^{2} x^{2} \log \left (x\right ) - 2 \, a x \sqrt {\frac {a x + 1}{a x}} \sqrt {-\frac {a x - 1}{a x}} - 2}{2 \, a^{2} x^{2}} \end {gather*}
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 \begin {gather*} \frac {\int \frac {2}{x^{3}}\, dx + \int \left (- \frac {a^{2}}{x}\right )\, dx + \int \frac {2 a \sqrt {-1 + \frac {1}{a x}} \sqrt {1 + \frac {1}{a x}}}{x^{2}}\, dx}{a^{2}} \end {gather*}
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 \begin {gather*} \text {could not integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 11.21, size = 323, normalized size = 3.76 \begin {gather*} \ln \left (\frac {1}{x}\right )-4\,\mathrm {atanh}\left (\frac {\sqrt {\frac {1}{a\,x}-1}-\mathrm {i}}{\sqrt {\frac {1}{a\,x}+1}-1}\right )+2\,\mathrm {acosh}\left (\frac {1}{a\,x}\right )+\frac {\frac {28\,{\left (\sqrt {\frac {1}{a\,x}-1}-\mathrm {i}\right )}^3}{{\left (\sqrt {\frac {1}{a\,x}+1}-1\right )}^3}+\frac {28\,{\left (\sqrt {\frac {1}{a\,x}-1}-\mathrm {i}\right )}^5}{{\left (\sqrt {\frac {1}{a\,x}+1}-1\right )}^5}+\frac {4\,{\left (\sqrt {\frac {1}{a\,x}-1}-\mathrm {i}\right )}^7}{{\left (\sqrt {\frac {1}{a\,x}+1}-1\right )}^7}+\frac {4\,\left (\sqrt {\frac {1}{a\,x}-1}-\mathrm {i}\right )}{\sqrt {\frac {1}{a\,x}+1}-1}}{1+\frac {6\,{\left (\sqrt {\frac {1}{a\,x}-1}-\mathrm {i}\right )}^4}{{\left (\sqrt {\frac {1}{a\,x}+1}-1\right )}^4}-\frac {4\,{\left (\sqrt {\frac {1}{a\,x}-1}-\mathrm {i}\right )}^6}{{\left (\sqrt {\frac {1}{a\,x}+1}-1\right )}^6}+\frac {{\left (\sqrt {\frac {1}{a\,x}-1}-\mathrm {i}\right )}^8}{{\left (\sqrt {\frac {1}{a\,x}+1}-1\right )}^8}-\frac {4\,{\left (\sqrt {\frac {1}{a\,x}-1}-\mathrm {i}\right )}^2}{{\left (\sqrt {\frac {1}{a\,x}+1}-1\right )}^2}}-\frac {1}{a^2\,x^2} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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