Optimal. Leaf size=229 \[ -\frac{\left (-6 i a^2-18 a+11 i\right ) \sqrt{i a+i b x+1} (-i a-i b x+1)^{3/2}}{6 b^3}-\frac{\left (-6 i a^2-18 a+11 i\right ) \sqrt{i a+i b x+1} \sqrt{-i a-i b x+1}}{2 b^3}+\frac{\left (-6 a^2+18 i a+11\right ) \sinh ^{-1}(a+b x)}{2 b^3}-\frac{i \sqrt{i a+i b x+1} (-i a-i b x+1)^{5/2}}{3 b^3}+\frac{i (-a+i)^2 (-i a-i b x+1)^{5/2}}{b^3 \sqrt{i a+i b x+1}} \]
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Rubi [A] time = 0.168235, antiderivative size = 229, normalized size of antiderivative = 1., number of steps used = 8, number of rules used = 7, integrand size = 16, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.438, Rules used = {5095, 89, 80, 50, 53, 619, 215} \[ -\frac{\left (-6 i a^2-18 a+11 i\right ) \sqrt{i a+i b x+1} (-i a-i b x+1)^{3/2}}{6 b^3}-\frac{\left (-6 i a^2-18 a+11 i\right ) \sqrt{i a+i b x+1} \sqrt{-i a-i b x+1}}{2 b^3}+\frac{\left (-6 a^2+18 i a+11\right ) \sinh ^{-1}(a+b x)}{2 b^3}-\frac{i \sqrt{i a+i b x+1} (-i a-i b x+1)^{5/2}}{3 b^3}+\frac{i (-a+i)^2 (-i a-i b x+1)^{5/2}}{b^3 \sqrt{i a+i b x+1}} \]
Antiderivative was successfully verified.
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Rule 5095
Rule 89
Rule 80
Rule 50
Rule 53
Rule 619
Rule 215
Rubi steps
\begin{align*} \int e^{-3 i \tan ^{-1}(a+b x)} x^2 \, dx &=\int \frac{x^2 (1-i a-i b x)^{3/2}}{(1+i a+i b x)^{3/2}} \, dx\\ &=\frac{i (i-a)^2 (1-i a-i b x)^{5/2}}{b^3 \sqrt{1+i a+i b x}}+\frac{i \int \frac{(1-i a-i b x)^{3/2} \left (-(i-a) (3+2 i a) b-b^2 x\right )}{\sqrt{1+i a+i b x}} \, dx}{b^3}\\ &=\frac{i (i-a)^2 (1-i a-i b x)^{5/2}}{b^3 \sqrt{1+i a+i b x}}-\frac{i (1-i a-i b x)^{5/2} \sqrt{1+i a+i b x}}{3 b^3}+\frac{\left (11+18 i a-6 a^2\right ) \int \frac{(1-i a-i b x)^{3/2}}{\sqrt{1+i a+i b x}} \, dx}{3 b^2}\\ &=\frac{i (i-a)^2 (1-i a-i b x)^{5/2}}{b^3 \sqrt{1+i a+i b x}}+\frac{\left (18 a-i \left (11-6 a^2\right )\right ) (1-i a-i b x)^{3/2} \sqrt{1+i a+i b x}}{6 b^3}-\frac{i (1-i a-i b x)^{5/2} \sqrt{1+i a+i b x}}{3 b^3}+\frac{\left (11+18 i a-6 a^2\right ) \int \frac{\sqrt{1-i a-i b x}}{\sqrt{1+i a+i b x}} \, dx}{2 b^2}\\ &=\frac{i (i-a)^2 (1-i a-i b x)^{5/2}}{b^3 \sqrt{1+i a+i b x}}+\frac{\left (18 a-i \left (11-6 a^2\right )\right ) \sqrt{1-i a-i b x} \sqrt{1+i a+i b x}}{2 b^3}+\frac{\left (18 a-i \left (11-6 a^2\right )\right ) (1-i a-i b x)^{3/2} \sqrt{1+i a+i b x}}{6 b^3}-\frac{i (1-i a-i b x)^{5/2} \sqrt{1+i a+i b x}}{3 b^3}+\frac{\left (11+18 i a-6 a^2\right ) \int \frac{1}{\sqrt{1-i a-i b x} \sqrt{1+i a+i b x}} \, dx}{2 b^2}\\ &=\frac{i (i-a)^2 (1-i a-i b x)^{5/2}}{b^3 \sqrt{1+i a+i b x}}+\frac{\left (18 a-i \left (11-6 a^2\right )\right ) \sqrt{1-i a-i b x} \sqrt{1+i a+i b x}}{2 b^3}+\frac{\left (18 a-i \left (11-6 a^2\right )\right ) (1-i a-i b x)^{3/2} \sqrt{1+i a+i b x}}{6 b^3}-\frac{i (1-i a-i b x)^{5/2} \sqrt{1+i a+i b x}}{3 b^3}+\frac{\left (11+18 i a-6 a^2\right ) \int \frac{1}{\sqrt{(1-i a) (1+i a)+2 a b x+b^2 x^2}} \, dx}{2 b^2}\\ &=\frac{i (i-a)^2 (1-i a-i b x)^{5/2}}{b^3 \sqrt{1+i a+i b x}}+\frac{\left (18 a-i \left (11-6 a^2\right )\right ) \sqrt{1-i a-i b x} \sqrt{1+i a+i b x}}{2 b^3}+\frac{\left (18 a-i \left (11-6 a^2\right )\right ) (1-i a-i b x)^{3/2} \sqrt{1+i a+i b x}}{6 b^3}-\frac{i (1-i a-i b x)^{5/2} \sqrt{1+i a+i b x}}{3 b^3}+\frac{\left (11+18 i a-6 a^2\right ) \operatorname{Subst}\left (\int \frac{1}{\sqrt{1+\frac{x^2}{4 b^2}}} \, dx,x,2 a b+2 b^2 x\right )}{4 b^4}\\ &=\frac{i (i-a)^2 (1-i a-i b x)^{5/2}}{b^3 \sqrt{1+i a+i b x}}+\frac{\left (18 a-i \left (11-6 a^2\right )\right ) \sqrt{1-i a-i b x} \sqrt{1+i a+i b x}}{2 b^3}+\frac{\left (18 a-i \left (11-6 a^2\right )\right ) (1-i a-i b x)^{3/2} \sqrt{1+i a+i b x}}{6 b^3}-\frac{i (1-i a-i b x)^{5/2} \sqrt{1+i a+i b x}}{3 b^3}+\frac{\left (11+18 i a-6 a^2\right ) \sinh ^{-1}(a+b x)}{2 b^3}\\ \end{align*}
Mathematica [A] time = 0.295245, size = 198, normalized size = 0.86 \[ \frac{a^3 (51+2 i b x)+a^2 (69 b x-50 i)+2 i a^4+a \left (2 i b^3 x^3+9 b^2 x^2-106 i b x+51\right )+i \left (2 b^4 x^4+9 i b^3 x^3-26 b^2 x^2+33 i b x-52\right )}{6 b^3 \sqrt{a^2+2 a b x+b^2 x^2+1}}+\frac{\sqrt [4]{-1} \left (-6 a^2+18 i a+11\right ) \sqrt{-i b} \sinh ^{-1}\left (\frac{\left (\frac{1}{2}+\frac{i}{2}\right ) \sqrt{b} \sqrt{-i (a+b x+i)}}{\sqrt{-i b}}\right )}{b^{7/2}} \]
Warning: Unable to verify antiderivative.
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Maple [B] time = 0.094, size = 1026, normalized size = 4.5 \begin{align*} \text{result too large to display} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [B] time = 1.56663, size = 842, normalized size = 3.68 \begin{align*} \frac{i \,{\left (b^{2} x^{2} + 2 \, a b x + a^{2} + 1\right )}^{\frac{3}{2}} a^{2}}{b^{5} x^{2} + 2 \, a b^{4} x + a^{2} b^{3} - 2 i \, b^{4} x - 2 i \, a b^{3} - b^{3}} + \frac{2 \,{\left (b^{2} x^{2} + 2 \, a b x + a^{2} + 1\right )}^{\frac{3}{2}} a}{b^{5} x^{2} + 2 \, a b^{4} x + a^{2} b^{3} - 2 i \, b^{4} x - 2 i \, a b^{3} - b^{3}} + \frac{2 \,{\left (b^{2} x^{2} + 2 \, a b x + a^{2} + 1\right )}^{\frac{3}{2}} a}{2 i \, b^{4} x + 2 i \, a b^{3} + 2 \, b^{3}} + \frac{6 i \, \sqrt{b^{2} x^{2} + 2 \, a b x + a^{2} + 1} a^{2}}{i \, b^{4} x + i \, a b^{3} + b^{3}} - \frac{i \,{\left (b^{2} x^{2} + 2 \, a b x + a^{2} + 1\right )}^{\frac{3}{2}}}{b^{5} x^{2} + 2 \, a b^{4} x + a^{2} b^{3} - 2 i \, b^{4} x - 2 i \, a b^{3} - b^{3}} - \frac{2 i \,{\left (b^{2} x^{2} + 2 \, a b x + a^{2} + 1\right )}^{\frac{3}{2}}}{2 i \, b^{4} x + 2 i \, a b^{3} + 2 \, b^{3}} + \frac{12 \, \sqrt{b^{2} x^{2} + 2 \, a b x + a^{2} + 1} a}{i \, b^{4} x + i \, a b^{3} + b^{3}} - \frac{3 \, a^{2} \operatorname{arsinh}\left (b x + a\right )}{b^{3}} - \frac{6 i \, \sqrt{b^{2} x^{2} + 2 \, a b x + a^{2} + 1}}{i \, b^{4} x + i \, a b^{3} + b^{3}} - \frac{\sqrt{-b^{2} x^{2} - 2 \, a b x - a^{2} + 4 i \, b x + 4 i \, a + 3} x}{2 \, b^{2}} + \frac{9 i \, a \operatorname{arsinh}\left (b x + a\right )}{b^{3}} + \frac{i \,{\left (b^{2} x^{2} + 2 \, a b x + a^{2} + 1\right )}^{\frac{3}{2}}}{3 \, b^{3}} + \frac{3 \, \sqrt{b^{2} x^{2} + 2 \, a b x + a^{2} + 1} a}{b^{3}} - \frac{\sqrt{-b^{2} x^{2} - 2 \, a b x - a^{2} + 4 i \, b x + 4 i \, a + 3} a}{2 \, b^{3}} + \frac{\arcsin \left (i \, b x + i \, a + 2\right )}{2 \, b^{3}} + \frac{6 \, \operatorname{arsinh}\left (b x + a\right )}{b^{3}} - \frac{3 i \, \sqrt{b^{2} x^{2} + 2 \, a b x + a^{2} + 1}}{b^{3}} + \frac{i \, \sqrt{-b^{2} x^{2} - 2 \, a b x - a^{2} + 4 i \, b x + 4 i \, a + 3}}{b^{3}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 2.43877, size = 485, normalized size = 2.12 \begin{align*} \frac{7 i \, a^{4} + 166 \, a^{3} +{\left (7 i \, a^{3} + 159 \, a^{2} - 249 i \, a - 96\right )} b x - 408 i \, a^{2} +{\left (72 \, a^{3} + 12 \,{\left (6 \, a^{2} - 18 i \, a - 11\right )} b x - 288 i \, a^{2} - 348 \, a + 132 i\right )} \log \left (-b x - a + \sqrt{b^{2} x^{2} + 2 \, a b x + a^{2} + 1}\right ) +{\left (8 i \, b^{3} x^{3} - 28 \, b^{2} x^{2} + 8 i \, a^{3} +{\left (64 \, a - 76 i\right )} b x + 212 \, a^{2} - 412 i \, a - 208\right )} \sqrt{b^{2} x^{2} + 2 \, a b x + a^{2} + 1} - 345 \, a + 96 i}{24 \, b^{4} x +{\left (24 \, a - 24 i\right )} b^{3}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F(-1)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Timed out} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.1758, size = 386, normalized size = 1.69 \begin{align*} \frac{1}{6} \, \sqrt{{\left (b x + a\right )}^{2} + 1}{\left ({\left (\frac{2 \, i x}{b} - \frac{2 \, a b^{6} i + 9 \, b^{6}}{b^{8}}\right )} x + \frac{2 \, a^{2} b^{5} i + 27 \, a b^{5} - 28 \, b^{5} i}{b^{8}}\right )} + \frac{{\left (6 \, a^{2} i + 18 \, a - 11 \, i\right )} \log \left (3 \,{\left (x{\left | b \right |} - \sqrt{{\left (b x + a\right )}^{2} + 1}\right )}^{2} a b i + a^{3} b i +{\left (x{\left | b \right |} - \sqrt{{\left (b x + a\right )}^{2} + 1}\right )}^{3} i{\left | b \right |} + 3 \,{\left (x{\left | b \right |} - \sqrt{{\left (b x + a\right )}^{2} + 1}\right )} a^{2} i{\left | b \right |} + 2 \,{\left (x{\left | b \right |} - \sqrt{{\left (b x + a\right )}^{2} + 1}\right )}^{2} b + 2 \, a^{2} b - a b i + 4 \,{\left (x{\left | b \right |} - \sqrt{{\left (b x + a\right )}^{2} + 1}\right )} a{\left | b \right |} -{\left (x{\left | b \right |} - \sqrt{{\left (b x + a\right )}^{2} + 1}\right )} i{\left | b \right |}\right )}{6 \, b^{2} i{\left | b \right |}} + \frac{{\left (6 \, a^{2}{\left | b \right |} - 18 \, a i{\left | b \right |} - 11 \,{\left | b \right |}\right )} \log \left (8 \, b^{3}\right )}{3 \, b^{4}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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