Optimal. Leaf size=283 \[ \frac {\left (2 a-i \left (1-2 a^2\right )\right ) b^3 \tanh ^{-1}\left (\frac {\sqrt {a+i} \sqrt {i a+i b x+1}}{\sqrt {-a+i} \sqrt {-i a-i b x+1}}\right )}{(-a+i)^{5/2} (a+i)^{7/2}}+\frac {\left (-2 a^2+9 i a+4\right ) b^2 \sqrt {-i a-i b x+1} \sqrt {i a+i b x+1}}{6 (1-i a) \left (a^2+1\right )^2 x}-\frac {(-2 a+3 i) b \sqrt {-i a-i b x+1} \sqrt {i a+i b x+1}}{6 (1-i a) \left (a^2+1\right ) x^2}-\frac {\sqrt {-i a-i b x+1} \sqrt {i a+i b x+1}}{3 (1-i a) x^3} \]
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Rubi [A] time = 0.18, antiderivative size = 283, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 6, integrand size = 16, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.375, Rules used = {5095, 99, 151, 12, 93, 208} \[ \frac {\left (-2 a^2+9 i a+4\right ) b^2 \sqrt {-i a-i b x+1} \sqrt {i a+i b x+1}}{6 (1-i a) \left (a^2+1\right )^2 x}+\frac {\left (2 a-i \left (1-2 a^2\right )\right ) b^3 \tanh ^{-1}\left (\frac {\sqrt {a+i} \sqrt {i a+i b x+1}}{\sqrt {-a+i} \sqrt {-i a-i b x+1}}\right )}{(-a+i)^{5/2} (a+i)^{7/2}}-\frac {(-2 a+3 i) b \sqrt {-i a-i b x+1} \sqrt {i a+i b x+1}}{6 (1-i a) \left (a^2+1\right ) x^2}-\frac {\sqrt {-i a-i b x+1} \sqrt {i a+i b x+1}}{3 (1-i a) x^3} \]
Antiderivative was successfully verified.
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Rule 12
Rule 93
Rule 99
Rule 151
Rule 208
Rule 5095
Rubi steps
\begin {align*} \int \frac {e^{i \tan ^{-1}(a+b x)}}{x^4} \, dx &=\int \frac {\sqrt {1+i a+i b x}}{x^4 \sqrt {1-i a-i b x}} \, dx\\ &=-\frac {\sqrt {1-i a-i b x} \sqrt {1+i a+i b x}}{3 (1-i a) x^3}+\frac {\int \frac {(3 i-2 a) b-2 b^2 x}{x^3 \sqrt {1-i a-i b x} \sqrt {1+i a+i b x}} \, dx}{3 (1-i a)}\\ &=-\frac {\sqrt {1-i a-i b x} \sqrt {1+i a+i b x}}{3 (1-i a) x^3}-\frac {(3 i-2 a) b \sqrt {1-i a-i b x} \sqrt {1+i a+i b x}}{6 (1-i a) \left (1+a^2\right ) x^2}-\frac {\int \frac {\left (4+9 i a-2 a^2\right ) b^2+(3 i-2 a) b^3 x}{x^2 \sqrt {1-i a-i b x} \sqrt {1+i a+i b x}} \, dx}{6 (1-i a) \left (1+a^2\right )}\\ &=-\frac {\sqrt {1-i a-i b x} \sqrt {1+i a+i b x}}{3 (1-i a) x^3}-\frac {(3 i-2 a) b \sqrt {1-i a-i b x} \sqrt {1+i a+i b x}}{6 (1-i a) \left (1+a^2\right ) x^2}+\frac {\left (4+9 i a-2 a^2\right ) b^2 \sqrt {1-i a-i b x} \sqrt {1+i a+i b x}}{6 (1-i a) \left (1+a^2\right )^2 x}+\frac {\int -\frac {3 \left (i-2 a-2 i a^2\right ) b^3}{x \sqrt {1-i a-i b x} \sqrt {1+i a+i b x}} \, dx}{6 (1-i a) \left (1+a^2\right )^2}\\ &=-\frac {\sqrt {1-i a-i b x} \sqrt {1+i a+i b x}}{3 (1-i a) x^3}-\frac {(3 i-2 a) b \sqrt {1-i a-i b x} \sqrt {1+i a+i b x}}{6 (1-i a) \left (1+a^2\right ) x^2}+\frac {\left (4+9 i a-2 a^2\right ) b^2 \sqrt {1-i a-i b x} \sqrt {1+i a+i b x}}{6 (1-i a) \left (1+a^2\right )^2 x}+\frac {\left (\left (1+2 i a-2 a^2\right ) b^3\right ) \int \frac {1}{x \sqrt {1-i a-i b x} \sqrt {1+i a+i b x}} \, dx}{2 (i-a)^2 (i+a)^3}\\ &=-\frac {\sqrt {1-i a-i b x} \sqrt {1+i a+i b x}}{3 (1-i a) x^3}-\frac {(3 i-2 a) b \sqrt {1-i a-i b x} \sqrt {1+i a+i b x}}{6 (1-i a) \left (1+a^2\right ) x^2}+\frac {\left (4+9 i a-2 a^2\right ) b^2 \sqrt {1-i a-i b x} \sqrt {1+i a+i b x}}{6 (1-i a) \left (1+a^2\right )^2 x}+\frac {\left (\left (1+2 i a-2 a^2\right ) b^3\right ) \operatorname {Subst}\left (\int \frac {1}{-1-i a-(-1+i a) x^2} \, dx,x,\frac {\sqrt {1+i a+i b x}}{\sqrt {1-i a-i b x}}\right )}{(i-a)^2 (i+a)^3}\\ &=-\frac {\sqrt {1-i a-i b x} \sqrt {1+i a+i b x}}{3 (1-i a) x^3}-\frac {(3 i-2 a) b \sqrt {1-i a-i b x} \sqrt {1+i a+i b x}}{6 (1-i a) \left (1+a^2\right ) x^2}+\frac {\left (4+9 i a-2 a^2\right ) b^2 \sqrt {1-i a-i b x} \sqrt {1+i a+i b x}}{6 (1-i a) \left (1+a^2\right )^2 x}+\frac {\left (2 a-i \left (1-2 a^2\right )\right ) b^3 \tanh ^{-1}\left (\frac {\sqrt {i+a} \sqrt {1+i a+i b x}}{\sqrt {i-a} \sqrt {1-i a-i b x}}\right )}{(i-a)^{5/2} (i+a)^{7/2}}\\ \end {align*}
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Mathematica [A] time = 0.29, size = 247, normalized size = 0.87 \[ \frac {(1+4 i a) b x (a+b x-i) \sqrt {a^2+2 a b x+b^2 x^2+1}+2 (1-i a) (a-i) (a+b x-i) \sqrt {a^2+2 a b x+b^2 x^2+1}+\frac {3 \left (2 a^2-2 i a-1\right ) b^2 x^2 \left (\sqrt {-1-i a} \sqrt {-1+i a} \sqrt {a^2+2 a b x+b^2 x^2+1}-2 i b x \tanh ^{-1}\left (\frac {\sqrt {-1-i a} \sqrt {-i (a+b x+i)}}{\sqrt {-1+i a} \sqrt {i a+i b x+1}}\right )\right )}{\sqrt {-1-i a} (-1+i a)^{3/2}}}{6 \left (a^2+1\right )^2 x^3} \]
Warning: Unable to verify antiderivative.
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fricas [B] time = 0.57, size = 700, normalized size = 2.47 \[ \frac {{\left (-2 i \, a^{2} - 9 \, a + 4 i\right )} b^{3} x^{3} - \sqrt {\frac {{\left (4 \, a^{4} - 8 i \, a^{3} - 8 \, a^{2} + 4 i \, a + 1\right )} b^{6}}{a^{12} + 2 i \, a^{11} + 4 \, a^{10} + 10 i \, a^{9} + 5 \, a^{8} + 20 i \, a^{7} + 20 i \, a^{5} - 5 \, a^{4} + 10 i \, a^{3} - 4 \, a^{2} + 2 i \, a - 1}} {\left (3 \, a^{5} + 3 i \, a^{4} + 6 \, a^{3} + 6 i \, a^{2} + 3 \, a + 3 i\right )} x^{3} \log \left (-\frac {{\left (2 \, a^{2} - 2 i \, a - 1\right )} b^{4} x - \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1} {\left (2 \, a^{2} - 2 i \, a - 1\right )} b^{3} + {\left (a^{7} + i \, a^{6} + 3 \, a^{5} + 3 i \, a^{4} + 3 \, a^{3} + 3 i \, a^{2} + a + i\right )} \sqrt {\frac {{\left (4 \, a^{4} - 8 i \, a^{3} - 8 \, a^{2} + 4 i \, a + 1\right )} b^{6}}{a^{12} + 2 i \, a^{11} + 4 \, a^{10} + 10 i \, a^{9} + 5 \, a^{8} + 20 i \, a^{7} + 20 i \, a^{5} - 5 \, a^{4} + 10 i \, a^{3} - 4 \, a^{2} + 2 i \, a - 1}}}{{\left (2 \, a^{2} - 2 i \, a - 1\right )} b^{3}}\right ) + \sqrt {\frac {{\left (4 \, a^{4} - 8 i \, a^{3} - 8 \, a^{2} + 4 i \, a + 1\right )} b^{6}}{a^{12} + 2 i \, a^{11} + 4 \, a^{10} + 10 i \, a^{9} + 5 \, a^{8} + 20 i \, a^{7} + 20 i \, a^{5} - 5 \, a^{4} + 10 i \, a^{3} - 4 \, a^{2} + 2 i \, a - 1}} {\left (3 \, a^{5} + 3 i \, a^{4} + 6 \, a^{3} + 6 i \, a^{2} + 3 \, a + 3 i\right )} x^{3} \log \left (-\frac {{\left (2 \, a^{2} - 2 i \, a - 1\right )} b^{4} x - \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1} {\left (2 \, a^{2} - 2 i \, a - 1\right )} b^{3} - {\left (a^{7} + i \, a^{6} + 3 \, a^{5} + 3 i \, a^{4} + 3 \, a^{3} + 3 i \, a^{2} + a + i\right )} \sqrt {\frac {{\left (4 \, a^{4} - 8 i \, a^{3} - 8 \, a^{2} + 4 i \, a + 1\right )} b^{6}}{a^{12} + 2 i \, a^{11} + 4 \, a^{10} + 10 i \, a^{9} + 5 \, a^{8} + 20 i \, a^{7} + 20 i \, a^{5} - 5 \, a^{4} + 10 i \, a^{3} - 4 \, a^{2} + 2 i \, a - 1}}}{{\left (2 \, a^{2} - 2 i \, a - 1\right )} b^{3}}\right ) + {\left ({\left (-2 i \, a^{2} - 9 \, a + 4 i\right )} b^{2} x^{2} - 2 i \, a^{4} + {\left (2 i \, a^{3} + 3 \, a^{2} + 2 i \, a + 3\right )} b x - 4 i \, a^{2} - 2 i\right )} \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1}}{{\left (6 \, a^{5} + 6 i \, a^{4} + 12 \, a^{3} + 12 i \, a^{2} + 6 \, a + 6 i\right )} x^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [B] time = 0.29, size = 900, normalized size = 3.18 \[ \text {result too large to display} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [B] time = 0.18, size = 611, normalized size = 2.16 \[ -\frac {i \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}\, a}{3 \left (a^{2}+1\right ) x^{3}}-\frac {\sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{3 \left (a^{2}+1\right ) x^{3}}+\frac {5 i a^{2} b \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{6 \left (a^{2}+1\right )^{2} x^{2}}+\frac {5 a b \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{6 \left (a^{2}+1\right )^{2} x^{2}}+\frac {5 i a^{4} b^{3} \ln \left (\frac {2 a^{2}+2+2 a b x +2 \sqrt {a^{2}+1}\, \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{x}\right )}{2 \left (a^{2}+1\right )^{\frac {7}{2}}}-\frac {5 a^{2} b^{2} \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{2 \left (a^{2}+1\right )^{3} x}+\frac {i b^{3} \ln \left (\frac {2 a^{2}+2+2 a b x +2 \sqrt {a^{2}+1}\, \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{x}\right )}{2 \left (a^{2}+1\right )^{\frac {3}{2}}}+\frac {5 a^{3} b^{3} \ln \left (\frac {2 a^{2}+2+2 a b x +2 \sqrt {a^{2}+1}\, \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{x}\right )}{2 \left (a^{2}+1\right )^{\frac {7}{2}}}-\frac {5 i a^{3} b^{2} \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{2 \left (a^{2}+1\right )^{3} x}-\frac {3 a \,b^{3} \ln \left (\frac {2 a^{2}+2+2 a b x +2 \sqrt {a^{2}+1}\, \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{x}\right )}{2 \left (a^{2}+1\right )^{\frac {5}{2}}}+\frac {13 i b^{2} \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}\, a}{6 \left (a^{2}+1\right )^{2} x}+\frac {2 b^{2} \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{3 \left (a^{2}+1\right )^{2} x}-\frac {3 i a^{2} b^{3} \ln \left (\frac {2 a^{2}+2+2 a b x +2 \sqrt {a^{2}+1}\, \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{x}\right )}{\left (a^{2}+1\right )^{\frac {5}{2}}}-\frac {i b \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{2 \left (a^{2}+1\right ) x^{2}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [B] time = 0.35, size = 644, normalized size = 2.28 \[ \frac {5 \, a^{3} {\left (i \, a + 1\right )} 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 {7}{2}}} - \frac {3 i \, a^{2} 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 {3 \, a {\left (i \, a + 1\right )} 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 {i \, 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 {5 \, \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1} a^{2} {\left (i \, a + 1\right )} b^{2}}{2 \, {\left (a^{2} + 1\right )}^{3} x} + \frac {3 i \, \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1} a b^{2}}{2 \, {\left (a^{2} + 1\right )}^{2} x} - \frac {2 \, \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1} {\left (-i \, a - 1\right )} b^{2}}{3 \, {\left (a^{2} + 1\right )}^{2} x} + \frac {5 \, \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1} a {\left (i \, a + 1\right )} b}{6 \, {\left (a^{2} + 1\right )}^{2} x^{2}} - \frac {i \, \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1} b}{2 \, {\left (a^{2} + 1\right )} x^{2}} - \frac {\sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1} {\left (i \, a + 1\right )}}{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 = -0.00 \[ \int \frac {1+a\,1{}\mathrm {i}+b\,x\,1{}\mathrm {i}}{x^4\,\sqrt {{\left (a+b\,x\right )}^2+1}} \,d x \]
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 \[ i \left (\int \left (- \frac {i}{x^{4} \sqrt {a^{2} + 2 a b x + b^{2} x^{2} + 1}}\right )\, dx + \int \frac {a}{x^{4} \sqrt {a^{2} + 2 a b x + b^{2} x^{2} + 1}}\, dx + \int \frac {b}{x^{3} \sqrt {a^{2} + 2 a b x + b^{2} x^{2} + 1}}\, dx\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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