Optimal. Leaf size=178 \[ \frac {6 i b \sqrt {1-i a-i b x}}{(i-a)^2 \sqrt {1+i a+i b x}}-\frac {(1-i a-i b x)^{3/2}}{(1+i a) x \sqrt {1+i a+i b x}}-\frac {6 i \sqrt {i+a} b \tanh ^{-1}\left (\frac {\sqrt {i+a} \sqrt {1+i a+i b x}}{\sqrt {i-a} \sqrt {1-i a-i b x}}\right )}{(i-a)^{5/2}} \]
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Rubi [A]
time = 0.08, antiderivative size = 178, normalized size of antiderivative = 1.00, number of steps
used = 5, number of rules used = 4, integrand size = 16, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.250, Rules used = {5203, 96, 95,
214} \begin {gather*} -\frac {(-i a-i b x+1)^{3/2}}{(1+i a) x \sqrt {i a+i b x+1}}+\frac {6 i b \sqrt {-i a-i b x+1}}{(-a+i)^2 \sqrt {i a+i b x+1}}-\frac {6 i \sqrt {a+i} b \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}} \end {gather*}
Antiderivative was successfully verified.
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Rule 95
Rule 96
Rule 214
Rule 5203
Rubi steps
\begin {align*} \int \frac {e^{-3 i \tan ^{-1}(a+b x)}}{x^2} \, dx &=\int \frac {(1-i a-i b x)^{3/2}}{x^2 (1+i a+i b x)^{3/2}} \, dx\\ &=-\frac {(1-i a-i b x)^{3/2}}{(1+i a) x \sqrt {1+i a+i b x}}+\frac {(3 b) \int \frac {\sqrt {1-i a-i b x}}{x (1+i a+i b x)^{3/2}} \, dx}{i-a}\\ &=\frac {6 i b \sqrt {1-i a-i b x}}{(i-a)^2 \sqrt {1+i a+i b x}}-\frac {(1-i a-i b x)^{3/2}}{(1+i a) x \sqrt {1+i a+i b x}}+\frac {(3 (i+a) b) \int \frac {1}{x \sqrt {1-i a-i b x} \sqrt {1+i a+i b x}} \, dx}{(i-a)^2}\\ &=\frac {6 i b \sqrt {1-i a-i b x}}{(i-a)^2 \sqrt {1+i a+i b x}}-\frac {(1-i a-i b x)^{3/2}}{(1+i a) x \sqrt {1+i a+i b x}}+\frac {(6 (i+a) b) \text {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}\\ &=\frac {6 i b \sqrt {1-i a-i b x}}{(i-a)^2 \sqrt {1+i a+i b x}}-\frac {(1-i a-i b x)^{3/2}}{(1+i a) x \sqrt {1+i a+i b x}}-\frac {6 i \sqrt {i+a} b \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}}\\ \end {align*}
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Mathematica [A]
time = 0.13, size = 145, normalized size = 0.81 \begin {gather*} \frac {\frac {\sqrt {-i (i+a+b x)} \left (1+a^2+5 i b x+a b x\right )}{x \sqrt {1+i a+i b x}}-\frac {6 i \sqrt {-1+i a} b \tanh ^{-1}\left (\frac {\sqrt {-1-i a} \sqrt {-i (i+a+b x)}}{\sqrt {-1+i a} \sqrt {1+i a+i b x}}\right )}{\sqrt {-1-i a}}}{(-i+a)^2} \end {gather*}
Antiderivative was successfully verified.
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Maple [B] Both result and optimal contain complex but leaf count of result is larger than twice
the leaf count of optimal. 1542 vs. \(2 (138 ) = 276\).
time = 0.19, size = 1543, normalized size = 8.67
method | result | size |
risch | \(-\frac {i \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}\, \left (i+a \right )}{\left (a -i\right )^{2} x}+\frac {3 b \ln \left (\frac {2 a^{2}+2+2 a b x +2 \sqrt {a^{2}+1}\, \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{x}\right ) a^{2}}{\left (a^{2}-2 i a -1\right ) \left (i-a \right ) \sqrt {a^{2}+1}}+\frac {3 b \ln \left (\frac {2 a^{2}+2+2 a b x +2 \sqrt {a^{2}+1}\, \sqrt {b^{2} x^{2}+2 a b x +a^{2}+1}}{x}\right )}{\left (a^{2}-2 i a -1\right ) \left (i-a \right ) \sqrt {a^{2}+1}}-\frac {4 \sqrt {\left (x -\frac {i-a}{b}\right )^{2} b^{2}+2 i b \left (x -\frac {i-a}{b}\right )}\, a}{\left (a^{2}-2 i a -1\right ) \left (i-a \right ) \left (x -\frac {i}{b}+\frac {a}{b}\right )}+\frac {4 i \sqrt {\left (x -\frac {i-a}{b}\right )^{2} b^{2}+2 i b \left (x -\frac {i-a}{b}\right )}}{\left (a^{2}-2 i a -1\right ) \left (i-a \right ) \left (x -\frac {i}{b}+\frac {a}{b}\right )}\) | \(340\) |
default | \(\text {Expression too large to display}\) | \(1543\) |
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 [B] Both result and optimal contain complex but leaf count of result is larger than twice
the leaf count of optimal. 389 vs. \(2 (116) = 232\).
time = 4.20, size = 389, normalized size = 2.19 \begin {gather*} -\frac {{\left (i \, a - 5\right )} b^{2} x^{2} + {\left (i \, a^{2} - 4 \, a + 5 i\right )} b x - 3 \, {\left ({\left (a^{2} - 2 i \, a - 1\right )} b x^{2} + {\left (a^{3} - 3 i \, a^{2} - 3 \, a + i\right )} x\right )} \sqrt {\frac {{\left (a + i\right )} b^{2}}{a^{5} - 5 i \, a^{4} - 10 \, a^{3} + 10 i \, a^{2} + 5 \, a - i}} \log \left (-\frac {b^{2} x + {\left (a^{3} - 3 i \, a^{2} - 3 \, a + i\right )} \sqrt {\frac {{\left (a + i\right )} b^{2}}{a^{5} - 5 i \, a^{4} - 10 \, a^{3} + 10 i \, a^{2} + 5 \, a - i}} - \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1} b}{b}\right ) + 3 \, {\left ({\left (a^{2} - 2 i \, a - 1\right )} b x^{2} + {\left (a^{3} - 3 i \, a^{2} - 3 \, a + i\right )} x\right )} \sqrt {\frac {{\left (a + i\right )} b^{2}}{a^{5} - 5 i \, a^{4} - 10 \, a^{3} + 10 i \, a^{2} + 5 \, a - i}} \log \left (-\frac {b^{2} x - {\left (a^{3} - 3 i \, a^{2} - 3 \, a + i\right )} \sqrt {\frac {{\left (a + i\right )} b^{2}}{a^{5} - 5 i \, a^{4} - 10 \, a^{3} + 10 i \, a^{2} + 5 \, a - i}} - \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1} b}{b}\right ) + \sqrt {b^{2} x^{2} + 2 \, a b x + a^{2} + 1} {\left ({\left (i \, a - 5\right )} b x + i \, a^{2} + i\right )}}{{\left (a^{2} - 2 i \, a - 1\right )} b x^{2} + {\left (a^{3} - 3 i \, a^{2} - 3 \, a + i\right )} x} \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*} i \left (\int \frac {\sqrt {a^{2} + 2 a b x + b^{2} x^{2} + 1}}{a^{3} x^{2} + 3 a^{2} b x^{3} - 3 i a^{2} x^{2} + 3 a b^{2} x^{4} - 6 i a b x^{3} - 3 a x^{2} + b^{3} x^{5} - 3 i b^{2} x^{4} - 3 b x^{3} + i x^{2}}\, dx + \int \frac {a^{2} \sqrt {a^{2} + 2 a b x + b^{2} x^{2} + 1}}{a^{3} x^{2} + 3 a^{2} b x^{3} - 3 i a^{2} x^{2} + 3 a b^{2} x^{4} - 6 i a b x^{3} - 3 a x^{2} + b^{3} x^{5} - 3 i b^{2} x^{4} - 3 b x^{3} + i x^{2}}\, dx + \int \frac {b^{2} x^{2} \sqrt {a^{2} + 2 a b x + b^{2} x^{2} + 1}}{a^{3} x^{2} + 3 a^{2} b x^{3} - 3 i a^{2} x^{2} + 3 a b^{2} x^{4} - 6 i a b x^{3} - 3 a x^{2} + b^{3} x^{5} - 3 i b^{2} x^{4} - 3 b x^{3} + i x^{2}}\, dx + \int \frac {2 a b x \sqrt {a^{2} + 2 a b x + b^{2} x^{2} + 1}}{a^{3} x^{2} + 3 a^{2} b x^{3} - 3 i a^{2} x^{2} + 3 a b^{2} x^{4} - 6 i a b x^{3} - 3 a x^{2} + b^{3} x^{5} - 3 i b^{2} x^{4} - 3 b x^{3} + i x^{2}}\, dx\right ) \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 [F]
time = 0.00, size = -1, normalized size = -0.01 \begin {gather*} \int \frac {{\left ({\left (a+b\,x\right )}^2+1\right )}^{3/2}}{x^2\,{\left (1+a\,1{}\mathrm {i}+b\,x\,1{}\mathrm {i}\right )}^3} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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