Optimal. Leaf size=156 \[ \frac {a b \left (a^2+a b x+1\right ) \sqrt {a^2+2 a b x+b^2 x^2+1}}{2 \left (a^2+1\right )^2 x^2}-\frac {\left (a^2+2 a b x+b^2 x^2+1\right )^{3/2}}{3 \left (a^2+1\right ) x^3}+\frac {a b^3 \tanh ^{-1}\left (\frac {a^2+a b x+1}{\sqrt {a^2+1} \sqrt {a^2+2 a b x+b^2 x^2+1}}\right )}{2 \left (a^2+1\right )^{5/2}}-\frac {a}{3 x^3}-\frac {b}{2 x^2} \]
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Rubi [A] time = 0.11, antiderivative size = 156, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 6, integrand size = 12, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.500, Rules used = {5907, 14, 730, 720, 724, 206} \[ \frac {a b \left (a^2+a b x+1\right ) \sqrt {a^2+2 a b x+b^2 x^2+1}}{2 \left (a^2+1\right )^2 x^2}-\frac {\left (a^2+2 a b x+b^2 x^2+1\right )^{3/2}}{3 \left (a^2+1\right ) x^3}+\frac {a b^3 \tanh ^{-1}\left (\frac {a^2+a b x+1}{\sqrt {a^2+1} \sqrt {a^2+2 a b x+b^2 x^2+1}}\right )}{2 \left (a^2+1\right )^{5/2}}-\frac {a}{3 x^3}-\frac {b}{2 x^2} \]
Antiderivative was successfully verified.
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Rule 14
Rule 206
Rule 720
Rule 724
Rule 730
Rule 5907
Rubi steps
\begin {align*} \int \frac {e^{\sinh ^{-1}(a+b x)}}{x^4} \, dx &=\int \frac {a+b x+\sqrt {1+(a+b x)^2}}{x^4} \, dx\\ &=\int \left (\frac {a}{x^4}+\frac {b}{x^3}+\frac {\sqrt {1+a^2+2 a b x+b^2 x^2}}{x^4}\right ) \, dx\\ &=-\frac {a}{3 x^3}-\frac {b}{2 x^2}+\int \frac {\sqrt {1+a^2+2 a b x+b^2 x^2}}{x^4} \, dx\\ &=-\frac {a}{3 x^3}-\frac {b}{2 x^2}-\frac {\left (1+a^2+2 a b x+b^2 x^2\right )^{3/2}}{3 \left (1+a^2\right ) x^3}-\frac {(a b) \int \frac {\sqrt {1+a^2+2 a b x+b^2 x^2}}{x^3} \, dx}{1+a^2}\\ &=-\frac {a}{3 x^3}-\frac {b}{2 x^2}+\frac {a b \left (1+a^2+a b x\right ) \sqrt {1+a^2+2 a b x+b^2 x^2}}{2 \left (1+a^2\right )^2 x^2}-\frac {\left (1+a^2+2 a b x+b^2 x^2\right )^{3/2}}{3 \left (1+a^2\right ) x^3}-\frac {\left (a b^3\right ) \int \frac {1}{x \sqrt {1+a^2+2 a b x+b^2 x^2}} \, dx}{2 \left (1+a^2\right )^2}\\ &=-\frac {a}{3 x^3}-\frac {b}{2 x^2}+\frac {a b \left (1+a^2+a b x\right ) \sqrt {1+a^2+2 a b x+b^2 x^2}}{2 \left (1+a^2\right )^2 x^2}-\frac {\left (1+a^2+2 a b x+b^2 x^2\right )^{3/2}}{3 \left (1+a^2\right ) x^3}+\frac {\left (a b^3\right ) \operatorname {Subst}\left (\int \frac {1}{4 \left (1+a^2\right )-x^2} \, dx,x,\frac {2 \left (1+a^2\right )+2 a b x}{\sqrt {1+a^2+2 a b x+b^2 x^2}}\right )}{\left (1+a^2\right )^2}\\ &=-\frac {a}{3 x^3}-\frac {b}{2 x^2}+\frac {a b \left (1+a^2+a b x\right ) \sqrt {1+a^2+2 a b x+b^2 x^2}}{2 \left (1+a^2\right )^2 x^2}-\frac {\left (1+a^2+2 a b x+b^2 x^2\right )^{3/2}}{3 \left (1+a^2\right ) x^3}+\frac {a b^3 \tanh ^{-1}\left (\frac {1+a^2+a b x}{\sqrt {1+a^2} \sqrt {1+a^2+2 a b x+b^2 x^2}}\right )}{2 \left (1+a^2\right )^{5/2}}\\ \end {align*}
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Mathematica [A] time = 0.12, size = 162, normalized size = 1.04 \[ \frac {1}{6} \left (-\frac {3 a b^3 \log (x)}{\left (a^2+1\right )^{5/2}}+\frac {3 a b^3 \log \left (\sqrt {a^2+1} \sqrt {a^2+2 a b x+b^2 x^2+1}+a^2+a b x+1\right )}{\left (a^2+1\right )^{5/2}}-\frac {\sqrt {a^2+2 a b x+b^2 x^2+1} \left (2 a^4+a^3 b x+a^2 \left (4-b^2 x^2\right )+a b x+2 b^2 x^2+2\right )}{\left (a^2+1\right )^2 x^3}-\frac {2 a}{x^3}-\frac {3 b}{x^2}\right ) \]
Warning: Unable to verify antiderivative.
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fricas [A] time = 0.51, size = 230, normalized size = 1.47 \[ \frac {3 \, \sqrt {a^{2} + 1} a b^{3} x^{3} \log \left (-\frac {a^{2} b x + a^{3} + \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1} {\left (a^{2} + \sqrt {a^{2} + 1} a + 1\right )} + {\left (a b x + a^{2} + 1\right )} \sqrt {a^{2} + 1} + a}{x}\right ) - 2 \, a^{7} + {\left (a^{4} - a^{2} - 2\right )} b^{3} x^{3} - 6 \, a^{5} - 6 \, a^{3} - 3 \, {\left (a^{6} + 3 \, a^{4} + 3 \, a^{2} + 1\right )} b x - {\left (2 \, a^{6} - {\left (a^{4} - a^{2} - 2\right )} b^{2} x^{2} + 6 \, a^{4} + {\left (a^{5} + 2 \, a^{3} + a\right )} b x + 6 \, a^{2} + 2\right )} \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1} - 2 \, a}{6 \, {\left (a^{6} + 3 \, a^{4} + 3 \, a^{2} + 1\right )} x^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [B] time = 0.53, size = 715, normalized size = 4.58 \[ -\frac {a b^{3} \log \left (\frac {{\left | -2 \, x {\left | b \right |} + 2 \, \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1} - 2 \, \sqrt {a^{2} + 1} \right |}}{{\left | -2 \, x {\left | b \right |} + 2 \, \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1} + 2 \, \sqrt {a^{2} + 1} \right |}}\right )}{2 \, {\left (a^{4} + 2 \, a^{2} + 1\right )} \sqrt {a^{2} + 1}} - \frac {3 \, b x + 2 \, a}{6 \, x^{3}} + \frac {20 \, {\left (x {\left | b \right |} - \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}\right )}^{3} a^{5} b^{3} + 12 \, {\left (x {\left | b \right |} - \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}\right )} a^{7} b^{3} + 6 \, {\left (x {\left | b \right |} - \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}\right )}^{4} a^{4} b^{2} {\left | b \right |} + 24 \, {\left (x {\left | b \right |} - \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}\right )}^{2} a^{6} b^{2} {\left | b \right |} + 2 \, a^{8} b^{2} {\left | b \right |} + 3 \, {\left (x {\left | b \right |} - \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}\right )}^{5} a b^{3} + 32 \, {\left (x {\left | b \right |} - \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}\right )}^{3} a^{3} b^{3} + 33 \, {\left (x {\left | b \right |} - \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}\right )} a^{5} b^{3} + 12 \, {\left (x {\left | b \right |} - \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}\right )}^{4} a^{2} b^{2} {\left | b \right |} + 48 \, {\left (x {\left | b \right |} - \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}\right )}^{2} a^{4} b^{2} {\left | b \right |} + 8 \, a^{6} b^{2} {\left | b \right |} + 12 \, {\left (x {\left | b \right |} - \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}\right )}^{3} a b^{3} + 30 \, {\left (x {\left | b \right |} - \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}\right )} a^{3} b^{3} + 6 \, {\left (x {\left | b \right |} - \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}\right )}^{4} b^{2} {\left | b \right |} + 24 \, {\left (x {\left | b \right |} - \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}\right )}^{2} a^{2} b^{2} {\left | b \right |} + 12 \, a^{4} b^{2} {\left | b \right |} + 9 \, {\left (x {\left | b \right |} - \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}\right )} a b^{3} + 8 \, a^{2} b^{2} {\left | b \right |} + 2 \, b^{2} {\left | b \right |}}{3 \, {\left (a^{4} + 2 \, a^{2} + 1\right )} {\left ({\left (x {\left | b \right |} - \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}\right )}^{2} - a^{2} - 1\right )}^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [B] time = 0.01, size = 501, normalized size = 3.21 \[ -\frac {\left (b^{2} x^{2}+2 a b x +a^{2}+1\right )^{\frac {3}{2}}}{3 \left (a^{2}+1\right ) x^{3}}+\frac {a b \left (b^{2} x^{2}+2 a b x +a^{2}+1\right )^{\frac {3}{2}}}{2 \left (a^{2}+1\right )^{2} x^{2}}-\frac {a^{2} b^{2} \left (b^{2} x^{2}+2 a b x +a^{2}+1\right )^{\frac {3}{2}}}{2 \left (a^{2}+1\right )^{3} x}+\frac {a^{3} b^{3} \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{\left (a^{2}+1\right )^{3}}+\frac {a^{4} b^{4} \ln \left (\frac {b^{2} x +a b}{\sqrt {b^{2}}}+\sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}\right )}{2 \left (a^{2}+1\right )^{3} \sqrt {b^{2}}}-\frac {a^{3} b^{3} \ln \left (\frac {2 a^{2}+2+2 a b x +2 \sqrt {a^{2}+1}\, \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{x}\right )}{2 \left (a^{2}+1\right )^{\frac {5}{2}}}+\frac {a^{2} b^{4} \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}\, x}{2 \left (a^{2}+1\right )^{3}}+\frac {a^{2} b^{4} \ln \left (\frac {b^{2} x +a b}{\sqrt {b^{2}}}+\sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}\right )}{2 \left (a^{2}+1\right )^{3} \sqrt {b^{2}}}-\frac {a \,b^{3} \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{2 \left (a^{2}+1\right )^{2}}-\frac {a^{2} b^{4} \ln \left (\frac {b^{2} x +a b}{\sqrt {b^{2}}}+\sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}\right )}{2 \left (a^{2}+1\right )^{2} \sqrt {b^{2}}}+\frac {a \,b^{3} \ln \left (\frac {2 a^{2}+2+2 a b x +2 \sqrt {a^{2}+1}\, \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{x}\right )}{2 \left (a^{2}+1\right )^{\frac {3}{2}}}-\frac {a}{3 x^{3}}-\frac {b}{2 x^{2}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [B] time = 0.56, size = 352, normalized size = 2.26 \[ -\frac {a^{3} b^{3} \operatorname {arsinh}\left (\frac {2 \, a b x}{\sqrt {-4 \, a^{2} b^{2} + 4 \, {\left (a^{2} + 1\right )} b^{2}} {\left | x \right |}} + \frac {2 \, a^{2}}{\sqrt {-4 \, a^{2} b^{2} + 4 \, {\left (a^{2} + 1\right )} b^{2}} {\left | x \right |}} + \frac {2}{\sqrt {-4 \, a^{2} b^{2} + 4 \, {\left (a^{2} + 1\right )} b^{2}} {\left | x \right |}}\right )}{2 \, {\left (a^{2} + 1\right )}^{\frac {5}{2}}} + \frac {a b^{3} \operatorname {arsinh}\left (\frac {2 \, a b x}{\sqrt {-4 \, a^{2} b^{2} + 4 \, {\left (a^{2} + 1\right )} b^{2}} {\left | x \right |}} + \frac {2 \, a^{2}}{\sqrt {-4 \, a^{2} b^{2} + 4 \, {\left (a^{2} + 1\right )} b^{2}} {\left | x \right |}} + \frac {2}{\sqrt {-4 \, a^{2} b^{2} + 4 \, {\left (a^{2} + 1\right )} b^{2}} {\left | x \right |}}\right )}{2 \, {\left (a^{2} + 1\right )}^{\frac {3}{2}}} - \frac {\sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1} a b^{3}}{2 \, {\left (a^{2} + 1\right )}^{2}} - \frac {\sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1} a^{2} b^{2}}{2 \, {\left (a^{2} + 1\right )}^{2} x} + \frac {{\left (b^{2} x^{2} + 2 \, a b x + a^{2} + 1\right )}^{\frac {3}{2}} a b}{2 \, {\left (a^{2} + 1\right )}^{2} x^{2}} - \frac {b}{2 \, x^{2}} - \frac {a}{3 \, x^{3}} - \frac {{\left (b^{2} x^{2} + 2 \, a b x + a^{2} + 1\right )}^{\frac {3}{2}}}{3 \, {\left (a^{2} + 1\right )} x^{3}} \]
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 \[ \int \frac {a+\sqrt {{\left (a+b\,x\right )}^2+1}+b\,x}{x^4} \,d x \]
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 \[ \int \frac {a + b x + \sqrt {a^{2} + 2 a b x + b^{2} x^{2} + 1}}{x^{4}}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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