Optimal. Leaf size=189 \[ -\frac {a b^3 \tan ^{-1}\left (\frac {\sqrt {1-a} \sqrt {a+b x+1}}{\sqrt {a+1} \sqrt {a+b x-1}}\right )}{\left (1-a^2\right )^{5/2}}+\frac {a b^2 \sqrt {a+b x-1} \sqrt {a+b x+1}}{2 \left (1-a^2\right )^2 x}+\frac {(a+b x-1)^{3/2} (a+b x+1)^{3/2}}{3 \left (1-a^2\right ) x^3}-\frac {a b \sqrt {a+b x-1} (a+b x+1)^{3/2}}{2 (1-a) (a+1)^2 x^2}-\frac {a}{3 x^3}-\frac {b}{2 x^2} \]
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Rubi [A] time = 0.16, antiderivative size = 189, normalized size of antiderivative = 1.00, number of steps used = 8, number of rules used = 6, integrand size = 12, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.500, Rules used = {5909, 14, 96, 94, 93, 205} \[ \frac {a b^2 \sqrt {a+b x-1} \sqrt {a+b x+1}}{2 \left (1-a^2\right )^2 x}-\frac {a b^3 \tan ^{-1}\left (\frac {\sqrt {1-a} \sqrt {a+b x+1}}{\sqrt {a+1} \sqrt {a+b x-1}}\right )}{\left (1-a^2\right )^{5/2}}+\frac {(a+b x-1)^{3/2} (a+b x+1)^{3/2}}{3 \left (1-a^2\right ) x^3}-\frac {a b \sqrt {a+b x-1} (a+b x+1)^{3/2}}{2 (1-a) (a+1)^2 x^2}-\frac {a}{3 x^3}-\frac {b}{2 x^2} \]
Antiderivative was successfully verified.
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Rule 14
Rule 93
Rule 94
Rule 96
Rule 205
Rule 5909
Rubi steps
\begin {align*} \int \frac {e^{\cosh ^{-1}(a+b x)}}{x^4} \, dx &=\int \frac {a+b x+\sqrt {-1+a+b x} \sqrt {1+a+b x}}{x^4} \, dx\\ &=\int \left (\frac {a}{x^4}+\frac {b}{x^3}+\frac {\sqrt {-1+a+b x} \sqrt {1+a+b x}}{x^4}\right ) \, dx\\ &=-\frac {a}{3 x^3}-\frac {b}{2 x^2}+\int \frac {\sqrt {-1+a+b x} \sqrt {1+a+b x}}{x^4} \, dx\\ &=-\frac {a}{3 x^3}-\frac {b}{2 x^2}+\frac {(-1+a+b x)^{3/2} (1+a+b x)^{3/2}}{3 \left (1-a^2\right ) x^3}+\frac {(a b) \int \frac {\sqrt {-1+a+b x} \sqrt {1+a+b x}}{x^3} \, dx}{1-a^2}\\ &=-\frac {a}{3 x^3}-\frac {b}{2 x^2}-\frac {a b \sqrt {-1+a+b x} (1+a+b x)^{3/2}}{2 (1-a) (1+a)^2 x^2}+\frac {(-1+a+b x)^{3/2} (1+a+b x)^{3/2}}{3 \left (1-a^2\right ) x^3}+\frac {\left (a b^2\right ) \int \frac {\sqrt {1+a+b x}}{x^2 \sqrt {-1+a+b x}} \, dx}{2 (1-a) (1+a)^2}\\ &=-\frac {a}{3 x^3}-\frac {b}{2 x^2}+\frac {a b^2 \sqrt {-1+a+b x} \sqrt {1+a+b x}}{2 \left (1-a^2\right )^2 x}-\frac {a b \sqrt {-1+a+b x} (1+a+b x)^{3/2}}{2 (1-a) (1+a)^2 x^2}+\frac {(-1+a+b x)^{3/2} (1+a+b x)^{3/2}}{3 \left (1-a^2\right ) x^3}+\frac {\left (a b^3\right ) \int \frac {1}{x \sqrt {-1+a+b x} \sqrt {1+a+b x}} \, dx}{2 \left (1-a^2\right )^2}\\ &=-\frac {a}{3 x^3}-\frac {b}{2 x^2}+\frac {a b^2 \sqrt {-1+a+b x} \sqrt {1+a+b x}}{2 \left (1-a^2\right )^2 x}-\frac {a b \sqrt {-1+a+b x} (1+a+b x)^{3/2}}{2 (1-a) (1+a)^2 x^2}+\frac {(-1+a+b x)^{3/2} (1+a+b x)^{3/2}}{3 \left (1-a^2\right ) x^3}+\frac {\left (a b^3\right ) \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 )}{\left (1-a^2\right )^2}\\ &=-\frac {a}{3 x^3}-\frac {b}{2 x^2}+\frac {a b^2 \sqrt {-1+a+b x} \sqrt {1+a+b x}}{2 \left (1-a^2\right )^2 x}-\frac {a b \sqrt {-1+a+b x} (1+a+b x)^{3/2}}{2 (1-a) (1+a)^2 x^2}+\frac {(-1+a+b x)^{3/2} (1+a+b x)^{3/2}}{3 \left (1-a^2\right ) x^3}-\frac {a b^3 \tan ^{-1}\left (\frac {\sqrt {1-a} \sqrt {1+a+b x}}{\sqrt {1+a} \sqrt {-1+a+b x}}\right )}{\left (1-a^2\right )^{5/2}}\\ \end {align*}
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Mathematica [C] time = 0.17, size = 179, normalized size = 0.95 \[ \frac {1}{6} \left (-\frac {3 i a b^3 \log \left (\frac {4 \left (1-a^2\right )^{3/2} \left (\sqrt {1-a^2} \sqrt {a+b x-1} \sqrt {a+b x+1}+i a^2+i a b x-i\right )}{a b^3 x}\right )}{\left (1-a^2\right )^{5/2}}+\frac {\sqrt {a+b x-1} \sqrt {a+b x+1} \left (-2 a^4-a^3 b x+a^2 \left (b^2 x^2+4\right )+a b x+2 b^2 x^2-2\right )}{\left (a^2-1\right )^2 x^3}-\frac {2 a}{x^3}-\frac {3 b}{x^2}\right ) \]
Warning: Unable to verify antiderivative.
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fricas [A] time = 2.07, size = 431, normalized size = 2.28 \[ \left [\frac {3 \, \sqrt {a^{2} - 1} a b^{3} x^{3} \log \left (\frac {a^{2} b x + a^{3} + {\left (a^{2} - \sqrt {a^{2} - 1} a - 1\right )} \sqrt {b x + a + 1} \sqrt {b x + a - 1} - {\left (a b x + a^{2} - 1\right )} \sqrt {a^{2} - 1} - a}{x}\right ) - 2 \, a^{7} + {\left (a^{4} + a^{2} - 2\right )} b^{3} x^{3} + 6 \, a^{5} - 6 \, a^{3} - 3 \, {\left (a^{6} - 3 \, a^{4} + 3 \, a^{2} - 1\right )} b x - {\left (2 \, a^{6} - {\left (a^{4} + a^{2} - 2\right )} b^{2} x^{2} - 6 \, a^{4} + {\left (a^{5} - 2 \, a^{3} + a\right )} b x + 6 \, a^{2} - 2\right )} \sqrt {b x + a + 1} \sqrt {b x + a - 1} + 2 \, a}{6 \, {\left (a^{6} - 3 \, a^{4} + 3 \, a^{2} - 1\right )} x^{3}}, \frac {6 \, \sqrt {-a^{2} + 1} a b^{3} x^{3} \arctan \left (-\frac {\sqrt {-a^{2} + 1} b x - \sqrt {-a^{2} + 1} \sqrt {b x + a + 1} \sqrt {b x + a - 1}}{a^{2} - 1}\right ) - 2 \, a^{7} + {\left (a^{4} + a^{2} - 2\right )} b^{3} x^{3} + 6 \, a^{5} - 6 \, a^{3} - 3 \, {\left (a^{6} - 3 \, a^{4} + 3 \, a^{2} - 1\right )} b x - {\left (2 \, a^{6} - {\left (a^{4} + a^{2} - 2\right )} b^{2} x^{2} - 6 \, a^{4} + {\left (a^{5} - 2 \, a^{3} + a\right )} b x + 6 \, a^{2} - 2\right )} \sqrt {b x + a + 1} \sqrt {b x + a - 1} + 2 \, a}{6 \, {\left (a^{6} - 3 \, a^{4} + 3 \, a^{2} - 1\right )} x^{3}}\right ] \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [B] time = 0.70, size = 487, normalized size = 2.58 \[ -\frac {\frac {6 \, a b^{4} \arctan \left (\frac {{\left (\sqrt {b x + a + 1} - \sqrt {b x + a - 1}\right )}^{2} - 2 \, a}{2 \, \sqrt {-a^{2} + 1}}\right )}{{\left (a^{4} - 2 \, a^{2} + 1\right )} \sqrt {-a^{2} + 1}} - \frac {4 \, {\left (12 \, a^{4} b^{4} {\left (\sqrt {b x + a + 1} - \sqrt {b x + a - 1}\right )}^{8} - 16 \, a^{5} b^{4} {\left (\sqrt {b x + a + 1} - \sqrt {b x + a - 1}\right )}^{6} - 3 \, a b^{4} {\left (\sqrt {b x + a + 1} - \sqrt {b x + a - 1}\right )}^{10} + 6 \, a^{2} b^{4} {\left (\sqrt {b x + a + 1} - \sqrt {b x + a - 1}\right )}^{8} - 56 \, a^{3} b^{4} {\left (\sqrt {b x + a + 1} - \sqrt {b x + a - 1}\right )}^{6} + 48 \, a^{4} b^{4} {\left (\sqrt {b x + a + 1} - \sqrt {b x + a - 1}\right )}^{4} + 12 \, b^{4} {\left (\sqrt {b x + a + 1} - \sqrt {b x + a - 1}\right )}^{8} - 48 \, a b^{4} {\left (\sqrt {b x + a + 1} - \sqrt {b x + a - 1}\right )}^{6} + 192 \, a^{2} b^{4} {\left (\sqrt {b x + a + 1} - \sqrt {b x + a - 1}\right )}^{4} - 96 \, a^{3} b^{4} {\left (\sqrt {b x + a + 1} - \sqrt {b x + a - 1}\right )}^{2} - 144 \, a b^{4} {\left (\sqrt {b x + a + 1} - \sqrt {b x + a - 1}\right )}^{2} + 32 \, a^{2} b^{4} + 64 \, b^{4}\right )}}{{\left (a^{4} - 2 \, a^{2} + 1\right )} {\left ({\left (\sqrt {b x + a + 1} - \sqrt {b x + a - 1}\right )}^{4} - 4 \, a {\left (\sqrt {b x + a + 1} - \sqrt {b x + a - 1}\right )}^{2} + 4\right )}^{3}} + \frac {3 \, {\left (b x + a + 1\right )} b^{4} - a b^{4} - 3 \, b^{4}}{b^{3} x^{3}}}{6 \, b} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [B] time = 0.01, size = 374, normalized size = 1.98 \[ -\frac {\sqrt {b x +a -1}\, \sqrt {b x +a +1}\, \left (3 \sqrt {a^{2}-1}\, \ln \left (\frac {2 a b x +2 \sqrt {a^{2}-1}\, \sqrt {b^{2} x^{2}+2 a b x +a^{2}-1}+2 a^{2}-2}{x}\right ) x^{3} a \,b^{3}-x^{2} a^{4} b^{2} \sqrt {b^{2} x^{2}+2 a b x +a^{2}-1}+x \,a^{5} b \sqrt {b^{2} x^{2}+2 a b x +a^{2}-1}-\sqrt {b^{2} x^{2}+2 a b x +a^{2}-1}\, x^{2} a^{2} b^{2}+2 a^{6} \sqrt {b^{2} x^{2}+2 a b x +a^{2}-1}-2 x \,a^{3} b \sqrt {b^{2} x^{2}+2 a b x +a^{2}-1}+2 \sqrt {b^{2} x^{2}+2 a b x +a^{2}-1}\, x^{2} b^{2}-6 a^{4} \sqrt {b^{2} x^{2}+2 a b x +a^{2}-1}+\sqrt {b^{2} x^{2}+2 a b x +a^{2}-1}\, x a b +6 \sqrt {b^{2} x^{2}+2 a b x +a^{2}-1}\, a^{2}-2 \sqrt {b^{2} x^{2}+2 a b x +a^{2}-1}\right )}{6 \sqrt {b^{2} x^{2}+2 a b x +a^{2}-1}\, \left (a^{2}-1\right )^{3} x^{3}}-\frac {a}{3 x^{3}}-\frac {b}{2 x^{2}} \]
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 = 18.89, size = 1537, normalized size = 8.13 \[ \text {result too large to display} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [F(-1)] time = 0.00, size = 0, normalized size = 0.00 \[ \text {Timed out} \]
Verification of antiderivative is not currently implemented for this CAS.
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