Optimal. Leaf size=689 \[ \frac{(1-i a x)^{7/8} (1+i a x)^{9/8}}{2 a^2}+\frac{(1-i a x)^{7/8} \sqrt [8]{1+i a x}}{8 a^2}+\frac{\sqrt{2-\sqrt{2}} \log \left (\frac{\sqrt [4]{1-i a x}}{\sqrt [4]{1+i a x}}-\frac{\sqrt{2-\sqrt{2}} \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}+1\right )}{64 a^2}-\frac{\sqrt{2-\sqrt{2}} \log \left (\frac{\sqrt [4]{1-i a x}}{\sqrt [4]{1+i a x}}+\frac{\sqrt{2-\sqrt{2}} \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}+1\right )}{64 a^2}+\frac{\sqrt{2+\sqrt{2}} \log \left (\frac{\sqrt [4]{1-i a x}}{\sqrt [4]{1+i a x}}-\frac{\sqrt{2+\sqrt{2}} \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}+1\right )}{64 a^2}-\frac{\sqrt{2+\sqrt{2}} \log \left (\frac{\sqrt [4]{1-i a x}}{\sqrt [4]{1+i a x}}+\frac{\sqrt{2+\sqrt{2}} \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}+1\right )}{64 a^2}-\frac{\sqrt{2+\sqrt{2}} \tan ^{-1}\left (\frac{\sqrt{2-\sqrt{2}}-\frac{2 \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}}{\sqrt{2+\sqrt{2}}}\right )}{32 a^2}-\frac{\sqrt{2-\sqrt{2}} \tan ^{-1}\left (\frac{\sqrt{2+\sqrt{2}}-\frac{2 \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}}{\sqrt{2-\sqrt{2}}}\right )}{32 a^2}+\frac{\sqrt{2+\sqrt{2}} \tan ^{-1}\left (\frac{\sqrt{2-\sqrt{2}}+\frac{2 \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}}{\sqrt{2+\sqrt{2}}}\right )}{32 a^2}+\frac{\sqrt{2-\sqrt{2}} \tan ^{-1}\left (\frac{\sqrt{2+\sqrt{2}}+\frac{2 \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}}{\sqrt{2-\sqrt{2}}}\right )}{32 a^2} \]
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Rubi [A] time = 0.494931, antiderivative size = 689, normalized size of antiderivative = 1., number of steps used = 26, number of rules used = 12, integrand size = 14, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.857, Rules used = {5062, 80, 50, 63, 331, 299, 1122, 1169, 634, 618, 204, 628} \[ \frac{(1-i a x)^{7/8} (1+i a x)^{9/8}}{2 a^2}+\frac{(1-i a x)^{7/8} \sqrt [8]{1+i a x}}{8 a^2}+\frac{\sqrt{2-\sqrt{2}} \log \left (\frac{\sqrt [4]{1-i a x}}{\sqrt [4]{1+i a x}}-\frac{\sqrt{2-\sqrt{2}} \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}+1\right )}{64 a^2}-\frac{\sqrt{2-\sqrt{2}} \log \left (\frac{\sqrt [4]{1-i a x}}{\sqrt [4]{1+i a x}}+\frac{\sqrt{2-\sqrt{2}} \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}+1\right )}{64 a^2}+\frac{\sqrt{2+\sqrt{2}} \log \left (\frac{\sqrt [4]{1-i a x}}{\sqrt [4]{1+i a x}}-\frac{\sqrt{2+\sqrt{2}} \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}+1\right )}{64 a^2}-\frac{\sqrt{2+\sqrt{2}} \log \left (\frac{\sqrt [4]{1-i a x}}{\sqrt [4]{1+i a x}}+\frac{\sqrt{2+\sqrt{2}} \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}+1\right )}{64 a^2}-\frac{\sqrt{2+\sqrt{2}} \tan ^{-1}\left (\frac{\sqrt{2-\sqrt{2}}-\frac{2 \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}}{\sqrt{2+\sqrt{2}}}\right )}{32 a^2}-\frac{\sqrt{2-\sqrt{2}} \tan ^{-1}\left (\frac{\sqrt{2+\sqrt{2}}-\frac{2 \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}}{\sqrt{2-\sqrt{2}}}\right )}{32 a^2}+\frac{\sqrt{2+\sqrt{2}} \tan ^{-1}\left (\frac{\sqrt{2-\sqrt{2}}+\frac{2 \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}}{\sqrt{2+\sqrt{2}}}\right )}{32 a^2}+\frac{\sqrt{2-\sqrt{2}} \tan ^{-1}\left (\frac{\sqrt{2+\sqrt{2}}+\frac{2 \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}}{\sqrt{2-\sqrt{2}}}\right )}{32 a^2} \]
Antiderivative was successfully verified.
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Rule 5062
Rule 80
Rule 50
Rule 63
Rule 331
Rule 299
Rule 1122
Rule 1169
Rule 634
Rule 618
Rule 204
Rule 628
Rubi steps
\begin{align*} \int e^{\frac{1}{4} i \tan ^{-1}(a x)} x \, dx &=\int \frac{x \sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}} \, dx\\ &=\frac{(1-i a x)^{7/8} (1+i a x)^{9/8}}{2 a^2}-\frac{i \int \frac{\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}} \, dx}{8 a}\\ &=\frac{(1-i a x)^{7/8} \sqrt [8]{1+i a x}}{8 a^2}+\frac{(1-i a x)^{7/8} (1+i a x)^{9/8}}{2 a^2}-\frac{i \int \frac{1}{\sqrt [8]{1-i a x} (1+i a x)^{7/8}} \, dx}{32 a}\\ &=\frac{(1-i a x)^{7/8} \sqrt [8]{1+i a x}}{8 a^2}+\frac{(1-i a x)^{7/8} (1+i a x)^{9/8}}{2 a^2}+\frac{\operatorname{Subst}\left (\int \frac{x^6}{\left (2-x^8\right )^{7/8}} \, dx,x,\sqrt [8]{1-i a x}\right )}{4 a^2}\\ &=\frac{(1-i a x)^{7/8} \sqrt [8]{1+i a x}}{8 a^2}+\frac{(1-i a x)^{7/8} (1+i a x)^{9/8}}{2 a^2}+\frac{\operatorname{Subst}\left (\int \frac{x^6}{1+x^8} \, dx,x,\frac{\sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{4 a^2}\\ &=\frac{(1-i a x)^{7/8} \sqrt [8]{1+i a x}}{8 a^2}+\frac{(1-i a x)^{7/8} (1+i a x)^{9/8}}{2 a^2}+\frac{\operatorname{Subst}\left (\int \frac{x^4}{1-\sqrt{2} x^2+x^4} \, dx,x,\frac{\sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{8 \sqrt{2} a^2}-\frac{\operatorname{Subst}\left (\int \frac{x^4}{1+\sqrt{2} x^2+x^4} \, dx,x,\frac{\sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{8 \sqrt{2} a^2}\\ &=\frac{(1-i a x)^{7/8} \sqrt [8]{1+i a x}}{8 a^2}+\frac{(1-i a x)^{7/8} (1+i a x)^{9/8}}{2 a^2}-\frac{\operatorname{Subst}\left (\int \frac{1-\sqrt{2} x^2}{1-\sqrt{2} x^2+x^4} \, dx,x,\frac{\sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{8 \sqrt{2} a^2}+\frac{\operatorname{Subst}\left (\int \frac{1+\sqrt{2} x^2}{1+\sqrt{2} x^2+x^4} \, dx,x,\frac{\sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{8 \sqrt{2} a^2}\\ &=\frac{(1-i a x)^{7/8} \sqrt [8]{1+i a x}}{8 a^2}+\frac{(1-i a x)^{7/8} (1+i a x)^{9/8}}{2 a^2}+\frac{\operatorname{Subst}\left (\int \frac{\sqrt{2-\sqrt{2}}-\left (1-\sqrt{2}\right ) x}{1-\sqrt{2-\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{16 \sqrt{2 \left (2-\sqrt{2}\right )} a^2}+\frac{\operatorname{Subst}\left (\int \frac{\sqrt{2-\sqrt{2}}+\left (1-\sqrt{2}\right ) x}{1+\sqrt{2-\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{16 \sqrt{2 \left (2-\sqrt{2}\right )} a^2}-\frac{\operatorname{Subst}\left (\int \frac{\sqrt{2+\sqrt{2}}-\left (1+\sqrt{2}\right ) x}{1-\sqrt{2+\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{16 \sqrt{2 \left (2+\sqrt{2}\right )} a^2}-\frac{\operatorname{Subst}\left (\int \frac{\sqrt{2+\sqrt{2}}+\left (1+\sqrt{2}\right ) x}{1+\sqrt{2+\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{16 \sqrt{2 \left (2+\sqrt{2}\right )} a^2}\\ &=\frac{(1-i a x)^{7/8} \sqrt [8]{1+i a x}}{8 a^2}+\frac{(1-i a x)^{7/8} (1+i a x)^{9/8}}{2 a^2}+\frac{\sqrt{\frac{1}{2} \left (3-2 \sqrt{2}\right )} \operatorname{Subst}\left (\int \frac{1}{1-\sqrt{2+\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{32 a^2}+\frac{\sqrt{\frac{1}{2} \left (3-2 \sqrt{2}\right )} \operatorname{Subst}\left (\int \frac{1}{1+\sqrt{2+\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{32 a^2}+\frac{\sqrt{2-\sqrt{2}} \operatorname{Subst}\left (\int \frac{-\sqrt{2-\sqrt{2}}+2 x}{1-\sqrt{2-\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{64 a^2}-\frac{\sqrt{2-\sqrt{2}} \operatorname{Subst}\left (\int \frac{\sqrt{2-\sqrt{2}}+2 x}{1+\sqrt{2-\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{64 a^2}+\frac{\sqrt{2+\sqrt{2}} \operatorname{Subst}\left (\int \frac{-\sqrt{2+\sqrt{2}}+2 x}{1-\sqrt{2+\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{64 a^2}-\frac{\sqrt{2+\sqrt{2}} \operatorname{Subst}\left (\int \frac{\sqrt{2+\sqrt{2}}+2 x}{1+\sqrt{2+\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{64 a^2}+\frac{\sqrt{\frac{1}{2} \left (3+2 \sqrt{2}\right )} \operatorname{Subst}\left (\int \frac{1}{1-\sqrt{2-\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{32 a^2}+\frac{\sqrt{\frac{1}{2} \left (3+2 \sqrt{2}\right )} \operatorname{Subst}\left (\int \frac{1}{1+\sqrt{2-\sqrt{2}} x+x^2} \, dx,x,\frac{\sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{32 a^2}\\ &=\frac{(1-i a x)^{7/8} \sqrt [8]{1+i a x}}{8 a^2}+\frac{(1-i a x)^{7/8} (1+i a x)^{9/8}}{2 a^2}+\frac{\sqrt{2-\sqrt{2}} \log \left (1+\frac{\sqrt [4]{1-i a x}}{\sqrt [4]{1+i a x}}-\frac{\sqrt{2-\sqrt{2}} \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{64 a^2}-\frac{\sqrt{2-\sqrt{2}} \log \left (1+\frac{\sqrt [4]{1-i a x}}{\sqrt [4]{1+i a x}}+\frac{\sqrt{2-\sqrt{2}} \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{64 a^2}+\frac{\sqrt{2+\sqrt{2}} \log \left (1+\frac{\sqrt [4]{1-i a x}}{\sqrt [4]{1+i a x}}-\frac{\sqrt{2+\sqrt{2}} \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{64 a^2}-\frac{\sqrt{2+\sqrt{2}} \log \left (1+\frac{\sqrt [4]{1-i a x}}{\sqrt [4]{1+i a x}}+\frac{\sqrt{2+\sqrt{2}} \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{64 a^2}-\frac{\sqrt{\frac{1}{2} \left (3-2 \sqrt{2}\right )} \operatorname{Subst}\left (\int \frac{1}{-2+\sqrt{2}-x^2} \, dx,x,-\sqrt{2+\sqrt{2}}+\frac{2 \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{16 a^2}-\frac{\sqrt{\frac{1}{2} \left (3-2 \sqrt{2}\right )} \operatorname{Subst}\left (\int \frac{1}{-2+\sqrt{2}-x^2} \, dx,x,\sqrt{2+\sqrt{2}}+\frac{2 \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{16 a^2}-\frac{\sqrt{\frac{1}{2} \left (3+2 \sqrt{2}\right )} \operatorname{Subst}\left (\int \frac{1}{-2-\sqrt{2}-x^2} \, dx,x,-\sqrt{2-\sqrt{2}}+\frac{2 \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{16 a^2}-\frac{\sqrt{\frac{1}{2} \left (3+2 \sqrt{2}\right )} \operatorname{Subst}\left (\int \frac{1}{-2-\sqrt{2}-x^2} \, dx,x,\sqrt{2-\sqrt{2}}+\frac{2 \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{16 a^2}\\ &=\frac{(1-i a x)^{7/8} \sqrt [8]{1+i a x}}{8 a^2}+\frac{(1-i a x)^{7/8} (1+i a x)^{9/8}}{2 a^2}-\frac{\sqrt{2+\sqrt{2}} \tan ^{-1}\left (\frac{\sqrt{2-\sqrt{2}}-\frac{2 \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}}{\sqrt{2+\sqrt{2}}}\right )}{32 a^2}-\frac{\sqrt{2-\sqrt{2}} \tan ^{-1}\left (\frac{\sqrt{2+\sqrt{2}}-\frac{2 \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}}{\sqrt{2-\sqrt{2}}}\right )}{32 a^2}+\frac{\sqrt{2+\sqrt{2}} \tan ^{-1}\left (\frac{\sqrt{2-\sqrt{2}}+\frac{2 \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}}{\sqrt{2+\sqrt{2}}}\right )}{32 a^2}+\frac{\sqrt{2-\sqrt{2}} \tan ^{-1}\left (\frac{\sqrt{2+\sqrt{2}}+\frac{2 \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}}{\sqrt{2-\sqrt{2}}}\right )}{32 a^2}+\frac{\sqrt{2-\sqrt{2}} \log \left (1+\frac{\sqrt [4]{1-i a x}}{\sqrt [4]{1+i a x}}-\frac{\sqrt{2-\sqrt{2}} \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{64 a^2}-\frac{\sqrt{2-\sqrt{2}} \log \left (1+\frac{\sqrt [4]{1-i a x}}{\sqrt [4]{1+i a x}}+\frac{\sqrt{2-\sqrt{2}} \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{64 a^2}+\frac{\sqrt{2+\sqrt{2}} \log \left (1+\frac{\sqrt [4]{1-i a x}}{\sqrt [4]{1+i a x}}-\frac{\sqrt{2+\sqrt{2}} \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{64 a^2}-\frac{\sqrt{2+\sqrt{2}} \log \left (1+\frac{\sqrt [4]{1-i a x}}{\sqrt [4]{1+i a x}}+\frac{\sqrt{2+\sqrt{2}} \sqrt [8]{1-i a x}}{\sqrt [8]{1+i a x}}\right )}{64 a^2}\\ \end{align*}
Mathematica [C] time = 0.0219907, size = 63, normalized size = 0.09 \[ \frac{(1-i a x)^{7/8} \left (2 \sqrt [8]{2} \text{Hypergeometric2F1}\left (-\frac{1}{8},\frac{7}{8},\frac{15}{8},\frac{1}{2} (1-i a x)\right )+7 (1+i a x)^{9/8}\right )}{14 a^2} \]
Warning: Unable to verify antiderivative.
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Maple [F] time = 0.068, size = 0, normalized size = 0. \begin{align*} \int \sqrt [4]{{(1+iax){\frac{1}{\sqrt{{a}^{2}{x}^{2}+1}}}}}x\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int x \left (\frac{i \, a x + 1}{\sqrt{a^{2} x^{2} + 1}}\right )^{\frac{1}{4}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.89723, size = 1304, normalized size = 1.89 \begin{align*} -\frac{8 \, a^{2} \left (\frac{i}{1048576 \, a^{8}}\right )^{\frac{1}{4}} \log \left (32 \, a^{2} \left (\frac{i}{1048576 \, a^{8}}\right )^{\frac{1}{4}} + \left (\frac{i \, \sqrt{a^{2} x^{2} + 1}}{a x + i}\right )^{\frac{1}{4}}\right ) + 8 i \, a^{2} \left (\frac{i}{1048576 \, a^{8}}\right )^{\frac{1}{4}} \log \left (32 i \, a^{2} \left (\frac{i}{1048576 \, a^{8}}\right )^{\frac{1}{4}} + \left (\frac{i \, \sqrt{a^{2} x^{2} + 1}}{a x + i}\right )^{\frac{1}{4}}\right ) - 8 i \, a^{2} \left (\frac{i}{1048576 \, a^{8}}\right )^{\frac{1}{4}} \log \left (-32 i \, a^{2} \left (\frac{i}{1048576 \, a^{8}}\right )^{\frac{1}{4}} + \left (\frac{i \, \sqrt{a^{2} x^{2} + 1}}{a x + i}\right )^{\frac{1}{4}}\right ) - 8 \, a^{2} \left (\frac{i}{1048576 \, a^{8}}\right )^{\frac{1}{4}} \log \left (-32 \, a^{2} \left (\frac{i}{1048576 \, a^{8}}\right )^{\frac{1}{4}} + \left (\frac{i \, \sqrt{a^{2} x^{2} + 1}}{a x + i}\right )^{\frac{1}{4}}\right ) + 8 \, a^{2} \left (-\frac{i}{1048576 \, a^{8}}\right )^{\frac{1}{4}} \log \left (32 \, a^{2} \left (-\frac{i}{1048576 \, a^{8}}\right )^{\frac{1}{4}} + \left (\frac{i \, \sqrt{a^{2} x^{2} + 1}}{a x + i}\right )^{\frac{1}{4}}\right ) + 8 i \, a^{2} \left (-\frac{i}{1048576 \, a^{8}}\right )^{\frac{1}{4}} \log \left (32 i \, a^{2} \left (-\frac{i}{1048576 \, a^{8}}\right )^{\frac{1}{4}} + \left (\frac{i \, \sqrt{a^{2} x^{2} + 1}}{a x + i}\right )^{\frac{1}{4}}\right ) - 8 i \, a^{2} \left (-\frac{i}{1048576 \, a^{8}}\right )^{\frac{1}{4}} \log \left (-32 i \, a^{2} \left (-\frac{i}{1048576 \, a^{8}}\right )^{\frac{1}{4}} + \left (\frac{i \, \sqrt{a^{2} x^{2} + 1}}{a x + i}\right )^{\frac{1}{4}}\right ) - 8 \, a^{2} \left (-\frac{i}{1048576 \, a^{8}}\right )^{\frac{1}{4}} \log \left (-32 \, a^{2} \left (-\frac{i}{1048576 \, a^{8}}\right )^{\frac{1}{4}} + \left (\frac{i \, \sqrt{a^{2} x^{2} + 1}}{a x + i}\right )^{\frac{1}{4}}\right ) -{\left (4 \, a^{2} x^{2} - i \, a x + 5\right )} \left (\frac{i \, \sqrt{a^{2} x^{2} + 1}}{a x + i}\right )^{\frac{1}{4}}}{8 \, a^{2}} \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 [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: TypeError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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