Optimal. Leaf size=98 \[ -\frac {2 b \tanh ^{-1}\left (\frac {\sqrt {1-a} \sqrt {a+b x+1}}{\sqrt {a+1} \sqrt {-a-b x+1}}\right )}{(1-a) \sqrt {1-a^2}}-\frac {\sqrt {-a-b x+1} \sqrt {a+b x+1}}{(1-a) x} \]
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Rubi [A] time = 0.06, antiderivative size = 98, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, integrand size = 12, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.333, Rules used = {6163, 94, 93, 208} \[ -\frac {2 b \tanh ^{-1}\left (\frac {\sqrt {1-a} \sqrt {a+b x+1}}{\sqrt {a+1} \sqrt {-a-b x+1}}\right )}{(1-a) \sqrt {1-a^2}}-\frac {\sqrt {-a-b x+1} \sqrt {a+b x+1}}{(1-a) x} \]
Antiderivative was successfully verified.
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Rule 93
Rule 94
Rule 208
Rule 6163
Rubi steps
\begin {align*} \int \frac {e^{\tanh ^{-1}(a+b x)}}{x^2} \, dx &=\int \frac {\sqrt {1+a+b x}}{x^2 \sqrt {1-a-b x}} \, dx\\ &=-\frac {\sqrt {1-a-b x} \sqrt {1+a+b x}}{(1-a) x}+\frac {b \int \frac {1}{x \sqrt {1-a-b x} \sqrt {1+a+b x}} \, dx}{1-a}\\ &=-\frac {\sqrt {1-a-b x} \sqrt {1+a+b x}}{(1-a) x}+\frac {(2 b) \operatorname {Subst}\left (\int \frac {1}{-1-a-(-1+a) x^2} \, dx,x,\frac {\sqrt {1+a+b x}}{\sqrt {1-a-b x}}\right )}{1-a}\\ &=-\frac {\sqrt {1-a-b x} \sqrt {1+a+b x}}{(1-a) x}-\frac {2 b \tanh ^{-1}\left (\frac {\sqrt {1-a} \sqrt {1+a+b x}}{\sqrt {1+a} \sqrt {1-a-b x}}\right )}{(1-a) \sqrt {1-a^2}}\\ \end {align*}
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Mathematica [A] time = 0.05, size = 88, normalized size = 0.90 \[ \frac {\sqrt {-((a+b x-1) (a+b x+1))}}{(a-1) x}-\frac {2 b \tanh ^{-1}\left (\frac {\sqrt {-a-1} \sqrt {-a-b x+1}}{\sqrt {a-1} \sqrt {a+b x+1}}\right )}{\sqrt {-a-1} (a-1)^{3/2}} \]
Warning: Unable to verify antiderivative.
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fricas [A] time = 1.12, size = 282, normalized size = 2.88 \[ \left [-\frac {\sqrt {-a^{2} + 1} b x \log \left (\frac {{\left (2 \, a^{2} - 1\right )} b^{2} x^{2} + 2 \, a^{4} + 4 \, {\left (a^{3} - a\right )} b x - 2 \, \sqrt {-b^{2} x^{2} - 2 \, a b x - a^{2} + 1} {\left (a b x + a^{2} - 1\right )} \sqrt {-a^{2} + 1} - 4 \, a^{2} + 2}{x^{2}}\right ) - 2 \, \sqrt {-b^{2} x^{2} - 2 \, a b x - a^{2} + 1} {\left (a^{2} - 1\right )}}{2 \, {\left (a^{3} - a^{2} - a + 1\right )} x}, -\frac {\sqrt {a^{2} - 1} b x \arctan \left (\frac {\sqrt {-b^{2} x^{2} - 2 \, a b x - a^{2} + 1} {\left (a b x + a^{2} - 1\right )} \sqrt {a^{2} - 1}}{{\left (a^{2} - 1\right )} b^{2} x^{2} + a^{4} + 2 \, {\left (a^{3} - a\right )} b x - 2 \, a^{2} + 1}\right ) - \sqrt {-b^{2} x^{2} - 2 \, a b x - a^{2} + 1} {\left (a^{2} - 1\right )}}{{\left (a^{3} - a^{2} - a + 1\right )} x}\right ] \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [B] time = 0.25, size = 190, normalized size = 1.94 \[ -\frac {2 \, b^{2} \arctan \left (\frac {\frac {{\left (\sqrt {-{\left (b x + a\right )}^{2} + 1} {\left | b \right |} + b\right )} a}{b^{2} x + a b} - 1}{\sqrt {a^{2} - 1}}\right )}{\sqrt {a^{2} - 1} {\left (a {\left | b \right |} - {\left | b \right |}\right )}} + \frac {2 \, {\left (a b^{2} - \frac {{\left (\sqrt {-{\left (b x + a\right )}^{2} + 1} {\left | b \right |} + b\right )} b^{2}}{b^{2} x + a b}\right )}}{{\left (a^{2} {\left | b \right |} - a {\left | b \right |}\right )} {\left (\frac {{\left (\sqrt {-{\left (b x + a\right )}^{2} + 1} {\left | b \right |} + b\right )}^{2} a}{{\left (b^{2} x + a b\right )}^{2}} + a - \frac {2 \, {\left (\sqrt {-{\left (b x + a\right )}^{2} + 1} {\left | b \right |} + b\right )}}{b^{2} x + a b}\right )}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [B] time = 0.04, size = 265, normalized size = 2.70 \[ -\frac {b \ln \left (\frac {-2 a^{2}+2-2 a b x +2 \sqrt {-a^{2}+1}\, \sqrt {-b^{2} x^{2}-2 a b x -a^{2}+1}}{x}\right )}{\sqrt {-a^{2}+1}}-\frac {\sqrt {-b^{2} x^{2}-2 a b x -a^{2}+1}}{\left (-a^{2}+1\right ) x}-\frac {a b \ln \left (\frac {-2 a^{2}+2-2 a b x +2 \sqrt {-a^{2}+1}\, \sqrt {-b^{2} x^{2}-2 a b x -a^{2}+1}}{x}\right )}{\left (-a^{2}+1\right )^{\frac {3}{2}}}-\frac {a \sqrt {-b^{2} x^{2}-2 a b x -a^{2}+1}}{\left (-a^{2}+1\right ) x}-\frac {a^{2} b \ln \left (\frac {-2 a^{2}+2-2 a b x +2 \sqrt {-a^{2}+1}\, \sqrt {-b^{2} x^{2}-2 a b x -a^{2}+1}}{x}\right )}{\left (-a^{2}+1\right )^{\frac {3}{2}}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [F(-2)] time = 0.00, size = 0, normalized size = 0.00 \[ \text {Exception raised: ValueError} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 1.69, size = 241, normalized size = 2.46 \[ \frac {\sqrt {-a^2-2\,a\,b\,x-b^2\,x^2+1}}{x\,\left (a^2-1\right )}-\frac {b\,\ln \left (\frac {\sqrt {1-a^2}\,\sqrt {-a^2-2\,a\,b\,x-b^2\,x^2+1}}{x}-\frac {a^2-1}{x}-a\,b\right )}{\sqrt {1-a^2}}+\frac {a^2\,b\,\mathrm {atanh}\left (\frac {a^2+b\,x\,a-1}{\sqrt {1-a^2}\,\sqrt {-a^2-2\,a\,b\,x-b^2\,x^2+1}}\right )}{{\left (1-a^2\right )}^{3/2}}+\frac {a\,\sqrt {-a^2-2\,a\,b\,x-b^2\,x^2+1}}{x\,\left (a^2-1\right )}+\frac {a\,b\,\mathrm {atanh}\left (\frac {a^2+b\,x\,a-1}{\sqrt {1-a^2}\,\sqrt {-a^2-2\,a\,b\,x-b^2\,x^2+1}}\right )}{{\left (1-a^2\right )}^{3/2}} \]
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 \[ \int \frac {a + b x + 1}{x^{2} \sqrt {- \left (a + b x - 1\right ) \left (a + b x + 1\right )}}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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