Optimal. Leaf size=207 \[ \frac {i b \left (a+b \tan ^{-1}(c x)\right )}{12 c (-c x+i)}-\frac {b \left (a+b \tan ^{-1}(c x)\right )}{12 c (-c x+i)^2}-\frac {i b \left (a+b \tan ^{-1}(c x)\right )}{9 c (-c x+i)^3}-\frac {i \left (a+b \tan ^{-1}(c x)\right )^2}{24 c}+\frac {i \left (a+b \tan ^{-1}(c x)\right )^2}{3 c (1+i c x)^3}+\frac {11 b^2}{144 c (-c x+i)}+\frac {5 i b^2}{144 c (-c x+i)^2}-\frac {b^2}{54 c (-c x+i)^3}-\frac {11 b^2 \tan ^{-1}(c x)}{144 c} \]
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Rubi [A] time = 0.22, antiderivative size = 207, normalized size of antiderivative = 1.00, number of steps used = 18, number of rules used = 6, integrand size = 21, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.286, Rules used = {4864, 4862, 627, 44, 203, 4884} \[ \frac {i b \left (a+b \tan ^{-1}(c x)\right )}{12 c (-c x+i)}-\frac {b \left (a+b \tan ^{-1}(c x)\right )}{12 c (-c x+i)^2}-\frac {i b \left (a+b \tan ^{-1}(c x)\right )}{9 c (-c x+i)^3}-\frac {i \left (a+b \tan ^{-1}(c x)\right )^2}{24 c}+\frac {i \left (a+b \tan ^{-1}(c x)\right )^2}{3 c (1+i c x)^3}+\frac {11 b^2}{144 c (-c x+i)}+\frac {5 i b^2}{144 c (-c x+i)^2}-\frac {b^2}{54 c (-c x+i)^3}-\frac {11 b^2 \tan ^{-1}(c x)}{144 c} \]
Antiderivative was successfully verified.
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Rule 44
Rule 203
Rule 627
Rule 4862
Rule 4864
Rule 4884
Rubi steps
\begin {align*} \int \frac {\left (a+b \tan ^{-1}(c x)\right )^2}{(1+i c x)^4} \, dx &=\frac {i \left (a+b \tan ^{-1}(c x)\right )^2}{3 c (1+i c x)^3}-\frac {1}{3} (2 i b) \int \left (\frac {a+b \tan ^{-1}(c x)}{2 (-i+c x)^4}+\frac {i \left (a+b \tan ^{-1}(c x)\right )}{4 (-i+c x)^3}-\frac {a+b \tan ^{-1}(c x)}{8 (-i+c x)^2}+\frac {a+b \tan ^{-1}(c x)}{8 \left (1+c^2 x^2\right )}\right ) \, dx\\ &=\frac {i \left (a+b \tan ^{-1}(c x)\right )^2}{3 c (1+i c x)^3}+\frac {1}{12} (i b) \int \frac {a+b \tan ^{-1}(c x)}{(-i+c x)^2} \, dx-\frac {1}{12} (i b) \int \frac {a+b \tan ^{-1}(c x)}{1+c^2 x^2} \, dx-\frac {1}{3} (i b) \int \frac {a+b \tan ^{-1}(c x)}{(-i+c x)^4} \, dx+\frac {1}{6} b \int \frac {a+b \tan ^{-1}(c x)}{(-i+c x)^3} \, dx\\ &=-\frac {i b \left (a+b \tan ^{-1}(c x)\right )}{9 c (i-c x)^3}-\frac {b \left (a+b \tan ^{-1}(c x)\right )}{12 c (i-c x)^2}+\frac {i b \left (a+b \tan ^{-1}(c x)\right )}{12 c (i-c x)}-\frac {i \left (a+b \tan ^{-1}(c x)\right )^2}{24 c}+\frac {i \left (a+b \tan ^{-1}(c x)\right )^2}{3 c (1+i c x)^3}+\frac {1}{12} \left (i b^2\right ) \int \frac {1}{(-i+c x) \left (1+c^2 x^2\right )} \, dx-\frac {1}{9} \left (i b^2\right ) \int \frac {1}{(-i+c x)^3 \left (1+c^2 x^2\right )} \, dx+\frac {1}{12} b^2 \int \frac {1}{(-i+c x)^2 \left (1+c^2 x^2\right )} \, dx\\ &=-\frac {i b \left (a+b \tan ^{-1}(c x)\right )}{9 c (i-c x)^3}-\frac {b \left (a+b \tan ^{-1}(c x)\right )}{12 c (i-c x)^2}+\frac {i b \left (a+b \tan ^{-1}(c x)\right )}{12 c (i-c x)}-\frac {i \left (a+b \tan ^{-1}(c x)\right )^2}{24 c}+\frac {i \left (a+b \tan ^{-1}(c x)\right )^2}{3 c (1+i c x)^3}+\frac {1}{12} \left (i b^2\right ) \int \frac {1}{(-i+c x)^2 (i+c x)} \, dx-\frac {1}{9} \left (i b^2\right ) \int \frac {1}{(-i+c x)^4 (i+c x)} \, dx+\frac {1}{12} b^2 \int \frac {1}{(-i+c x)^3 (i+c x)} \, dx\\ &=-\frac {i b \left (a+b \tan ^{-1}(c x)\right )}{9 c (i-c x)^3}-\frac {b \left (a+b \tan ^{-1}(c x)\right )}{12 c (i-c x)^2}+\frac {i b \left (a+b \tan ^{-1}(c x)\right )}{12 c (i-c x)}-\frac {i \left (a+b \tan ^{-1}(c x)\right )^2}{24 c}+\frac {i \left (a+b \tan ^{-1}(c x)\right )^2}{3 c (1+i c x)^3}+\frac {1}{12} \left (i b^2\right ) \int \left (-\frac {i}{2 (-i+c x)^2}+\frac {i}{2 \left (1+c^2 x^2\right )}\right ) \, dx-\frac {1}{9} \left (i b^2\right ) \int \left (-\frac {i}{2 (-i+c x)^4}+\frac {1}{4 (-i+c x)^3}+\frac {i}{8 (-i+c x)^2}-\frac {i}{8 \left (1+c^2 x^2\right )}\right ) \, dx+\frac {1}{12} b^2 \int \left (-\frac {i}{2 (-i+c x)^3}+\frac {1}{4 (-i+c x)^2}-\frac {1}{4 \left (1+c^2 x^2\right )}\right ) \, dx\\ &=-\frac {b^2}{54 c (i-c x)^3}+\frac {5 i b^2}{144 c (i-c x)^2}+\frac {11 b^2}{144 c (i-c x)}-\frac {i b \left (a+b \tan ^{-1}(c x)\right )}{9 c (i-c x)^3}-\frac {b \left (a+b \tan ^{-1}(c x)\right )}{12 c (i-c x)^2}+\frac {i b \left (a+b \tan ^{-1}(c x)\right )}{12 c (i-c x)}-\frac {i \left (a+b \tan ^{-1}(c x)\right )^2}{24 c}+\frac {i \left (a+b \tan ^{-1}(c x)\right )^2}{3 c (1+i c x)^3}-\frac {1}{72} b^2 \int \frac {1}{1+c^2 x^2} \, dx-\frac {1}{48} b^2 \int \frac {1}{1+c^2 x^2} \, dx-\frac {1}{24} b^2 \int \frac {1}{1+c^2 x^2} \, dx\\ &=-\frac {b^2}{54 c (i-c x)^3}+\frac {5 i b^2}{144 c (i-c x)^2}+\frac {11 b^2}{144 c (i-c x)}-\frac {11 b^2 \tan ^{-1}(c x)}{144 c}-\frac {i b \left (a+b \tan ^{-1}(c x)\right )}{9 c (i-c x)^3}-\frac {b \left (a+b \tan ^{-1}(c x)\right )}{12 c (i-c x)^2}+\frac {i b \left (a+b \tan ^{-1}(c x)\right )}{12 c (i-c x)}-\frac {i \left (a+b \tan ^{-1}(c x)\right )^2}{24 c}+\frac {i \left (a+b \tan ^{-1}(c x)\right )^2}{3 c (1+i c x)^3}\\ \end {align*}
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Mathematica [A] time = 0.23, size = 155, normalized size = 0.75 \[ -\frac {144 a^2+12 a b \left (3 i c^2 x^2+9 c x-10 i\right )+3 b (c x+i) \tan ^{-1}(c x) \left (12 a \left (i c^2 x^2+4 c x-7 i\right )+b \left (11 c^2 x^2-32 i c x-29\right )\right )+b^2 \left (33 c^2 x^2-81 i c x-56\right )+18 b^2 \left (i c^3 x^3+3 c^2 x^2-3 i c x+7\right ) \tan ^{-1}(c x)^2}{432 c (c x-i)^3} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.80, size = 206, normalized size = 1.00 \[ -\frac {6 \, {\left (12 i \, a b + 11 \, b^{2}\right )} c^{2} x^{2} + {\left (216 \, a b - 162 i \, b^{2}\right )} c x - {\left (9 i \, b^{2} c^{3} x^{3} + 27 \, b^{2} c^{2} x^{2} - 27 i \, b^{2} c x + 63 \, b^{2}\right )} \log \left (-\frac {c x + i}{c x - i}\right )^{2} + 288 \, a^{2} - 240 i \, a b - 112 \, b^{2} - {\left ({\left (36 \, a b - 33 i \, b^{2}\right )} c^{3} x^{3} - 9 \, {\left (12 i \, a b + 7 \, b^{2}\right )} c^{2} x^{2} - {\left (108 \, a b + 9 i \, b^{2}\right )} c x - 252 i \, a b - 87 \, b^{2}\right )} \log \left (-\frac {c x + i}{c x - i}\right )}{864 \, c^{4} x^{3} - 2592 i \, c^{3} x^{2} - 2592 \, c^{2} x + 864 i \, c} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [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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maple [B] time = 0.09, size = 404, normalized size = 1.95 \[ -\frac {i b^{2} \ln \left (-\frac {i \left (-c x +i\right )}{2}\right ) \ln \left (-\frac {i \left (c x +i\right )}{2}\right )}{48 c}-\frac {i b^{2} \ln \left (c x +i\right )^{2}}{96 c}+\frac {b^{2} \arctan \left (c x \right ) \ln \left (c x +i\right )}{24 c}-\frac {b^{2} \arctan \left (c x \right ) \ln \left (c x -i\right )}{24 c}-\frac {b^{2} \arctan \left (c x \right )}{12 c \left (c x -i\right )^{2}}+\frac {i b^{2} \ln \left (c x -i\right ) \ln \left (-\frac {i \left (c x +i\right )}{2}\right )}{48 c}+\frac {i b^{2} \arctan \left (c x \right )}{9 c \left (c x -i\right )^{3}}-\frac {11 b^{2} \arctan \left (c x \right )}{144 c}+\frac {b^{2}}{54 c \left (c x -i\right )^{3}}-\frac {11 b^{2}}{144 c \left (c x -i\right )}-\frac {i b^{2} \arctan \left (c x \right )}{12 c \left (c x -i\right )}+\frac {i a b}{9 c \left (c x -i\right )^{3}}+\frac {2 i a b \arctan \left (c x \right )}{3 c \left (i c x +1\right )^{3}}-\frac {i a b \arctan \left (c x \right )}{12 c}+\frac {5 i b^{2}}{144 c \left (c x -i\right )^{2}}+\frac {i b^{2} \arctan \left (c x \right )^{2}}{3 c \left (i c x +1\right )^{3}}-\frac {i b^{2} \ln \left (c x -i\right )^{2}}{96 c}+\frac {i a^{2}}{3 c \left (i c x +1\right )^{3}}-\frac {a b}{12 c \left (c x -i\right )^{2}}+\frac {i b^{2} \ln \left (-\frac {i \left (-c x +i\right )}{2}\right ) \ln \left (c x +i\right )}{48 c}-\frac {i a b}{12 c \left (c x -i\right )} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 0.43, size = 181, normalized size = 0.87 \[ -\frac {{\left (36 i \, a b + 33 \, b^{2}\right )} c^{2} x^{2} + 27 \, {\left (4 \, a b - 3 i \, b^{2}\right )} c x + {\left (18 i \, b^{2} c^{3} x^{3} + 54 \, b^{2} c^{2} x^{2} - 54 i \, b^{2} c x + 126 \, b^{2}\right )} \arctan \left (c x\right )^{2} + 144 \, a^{2} - 120 i \, a b - 56 \, b^{2} + {\left ({\left (36 i \, a b + 33 \, b^{2}\right )} c^{3} x^{3} + 9 \, {\left (12 \, a b - 7 i \, b^{2}\right )} c^{2} x^{2} + {\left (-108 i \, a b + 9 \, b^{2}\right )} c x + 252 \, a b - 87 i \, b^{2}\right )} \arctan \left (c x\right )}{432 \, c^{4} x^{3} - 1296 i \, c^{3} x^{2} - 1296 \, c^{2} x + 432 i \, c} \]
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 \[ \int \frac {{\left (a+b\,\mathrm {atan}\left (c\,x\right )\right )}^2}{{\left (1+c\,x\,1{}\mathrm {i}\right )}^4} \,d x \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [B] time = 90.24, size = 549, normalized size = 2.65 \[ \frac {b \left (12 a - 11 i b\right ) \log {\left (- \frac {b \left (12 a - 11 i b\right )}{c} + x \left (12 i a b + 11 b^{2}\right ) \right )}}{288 c} - \frac {b \left (12 a - 11 i b\right ) \log {\left (\frac {b \left (12 a - 11 i b\right )}{c} + x \left (12 i a b + 11 b^{2}\right ) \right )}}{288 c} + \frac {\left (48 a b + 3 b^{2} c^{3} x^{3} \log {\left (i c x + 1 \right )} - 9 i b^{2} c^{2} x^{2} \log {\left (i c x + 1 \right )} + 6 i b^{2} c^{2} x^{2} - 9 b^{2} c x \log {\left (i c x + 1 \right )} + 18 b^{2} c x - 21 i b^{2} \log {\left (i c x + 1 \right )} - 20 i b^{2}\right ) \log {\left (- i c x + 1 \right )}}{144 i c^{4} x^{3} + 432 c^{3} x^{2} - 432 i c^{2} x - 144 c} + \frac {\left (- b^{2} c^{3} x^{3} + 3 i b^{2} c^{2} x^{2} + 3 b^{2} c x + 7 i b^{2}\right ) \log {\left (- i c x + 1 \right )}^{2}}{96 i c^{4} x^{3} + 288 c^{3} x^{2} - 288 i c^{2} x - 96 c} + \frac {\left (24 i a b - 3 b^{2} c^{2} x^{2} + 9 i b^{2} c x + 10 b^{2}\right ) \log {\left (i c x + 1 \right )}}{72 c^{4} x^{3} - 216 i c^{3} x^{2} - 216 c^{2} x + 72 i c} + \frac {\left (- i b^{2} c^{3} x^{3} - 3 b^{2} c^{2} x^{2} + 3 i b^{2} c x - 7 b^{2}\right ) \log {\left (i c x + 1 \right )}^{2}}{- 96 c^{4} x^{3} + 288 i c^{3} x^{2} + 288 c^{2} x - 96 i c} - \frac {- 144 a^{2} + 120 i a b + 56 b^{2} + x^{2} \left (- 36 i a b c^{2} - 33 b^{2} c^{2}\right ) + x \left (- 108 a b c + 81 i b^{2} c\right )}{- 432 c^{4} x^{3} + 1296 i c^{3} x^{2} + 1296 c^{2} x - 432 i c} \]
Verification of antiderivative is not currently implemented for this CAS.
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