Optimal. Leaf size=159 \[ -\frac{3 x^{m+1} \, _2F_1\left (\frac{1}{2},\frac{m+1}{2};\frac{m+3}{2};-a^2 x^2\right )}{m+1}+\frac{4 x^{m+1} \, _2F_1\left (\frac{3}{2},\frac{m+1}{2};\frac{m+3}{2};-a^2 x^2\right )}{m+1}-\frac{i a x^{m+2} \, _2F_1\left (\frac{1}{2},\frac{m+2}{2};\frac{m+4}{2};-a^2 x^2\right )}{m+2}+\frac{4 i a x^{m+2} \, _2F_1\left (\frac{3}{2},\frac{m+2}{2};\frac{m+4}{2};-a^2 x^2\right )}{m+2} \]
[Out]
________________________________________________________________________________________
Rubi [A] time = 0.774235, antiderivative size = 159, normalized size of antiderivative = 1., number of steps used = 9, number of rules used = 5, integrand size = 14, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.357, Rules used = {5060, 6742, 364, 850, 808} \[ -\frac{3 x^{m+1} \text{Hypergeometric2F1}\left (\frac{1}{2},\frac{m+1}{2},\frac{m+3}{2},-a^2 x^2\right )}{m+1}+\frac{4 x^{m+1} \text{Hypergeometric2F1}\left (\frac{3}{2},\frac{m+1}{2},\frac{m+3}{2},-a^2 x^2\right )}{m+1}-\frac{i a x^{m+2} \text{Hypergeometric2F1}\left (\frac{1}{2},\frac{m+2}{2},\frac{m+4}{2},-a^2 x^2\right )}{m+2}+\frac{4 i a x^{m+2} \text{Hypergeometric2F1}\left (\frac{3}{2},\frac{m+2}{2},\frac{m+4}{2},-a^2 x^2\right )}{m+2} \]
Antiderivative was successfully verified.
[In]
[Out]
Rule 5060
Rule 6742
Rule 364
Rule 850
Rule 808
Rubi steps
\begin{align*} \int e^{3 i \tan ^{-1}(a x)} x^m \, dx &=\int \frac{x^m (1+i a x)^2}{(1-i a x) \sqrt{1+a^2 x^2}} \, dx\\ &=\int \left (-\frac{3 x^m}{\sqrt{1+a^2 x^2}}-\frac{i a x^{1+m}}{\sqrt{1+a^2 x^2}}+\frac{4 x^m}{(1-i a x) \sqrt{1+a^2 x^2}}\right ) \, dx\\ &=-\left (3 \int \frac{x^m}{\sqrt{1+a^2 x^2}} \, dx\right )+4 \int \frac{x^m}{(1-i a x) \sqrt{1+a^2 x^2}} \, dx-(i a) \int \frac{x^{1+m}}{\sqrt{1+a^2 x^2}} \, dx\\ &=-\frac{3 x^{1+m} \, _2F_1\left (\frac{1}{2},\frac{1+m}{2};\frac{3+m}{2};-a^2 x^2\right )}{1+m}-\frac{i a x^{2+m} \, _2F_1\left (\frac{1}{2},\frac{2+m}{2};\frac{4+m}{2};-a^2 x^2\right )}{2+m}+4 \int \frac{x^m (1+i a x)}{\left (1+a^2 x^2\right )^{3/2}} \, dx\\ &=-\frac{3 x^{1+m} \, _2F_1\left (\frac{1}{2},\frac{1+m}{2};\frac{3+m}{2};-a^2 x^2\right )}{1+m}-\frac{i a x^{2+m} \, _2F_1\left (\frac{1}{2},\frac{2+m}{2};\frac{4+m}{2};-a^2 x^2\right )}{2+m}+4 \int \frac{x^m}{\left (1+a^2 x^2\right )^{3/2}} \, dx+(4 i a) \int \frac{x^{1+m}}{\left (1+a^2 x^2\right )^{3/2}} \, dx\\ &=-\frac{3 x^{1+m} \, _2F_1\left (\frac{1}{2},\frac{1+m}{2};\frac{3+m}{2};-a^2 x^2\right )}{1+m}-\frac{i a x^{2+m} \, _2F_1\left (\frac{1}{2},\frac{2+m}{2};\frac{4+m}{2};-a^2 x^2\right )}{2+m}+\frac{4 x^{1+m} \, _2F_1\left (\frac{3}{2},\frac{1+m}{2};\frac{3+m}{2};-a^2 x^2\right )}{1+m}+\frac{4 i a x^{2+m} \, _2F_1\left (\frac{3}{2},\frac{2+m}{2};\frac{4+m}{2};-a^2 x^2\right )}{2+m}\\ \end{align*}
Mathematica [C] time = 0.0770909, size = 113, normalized size = 0.71 \[ -\frac{i \sqrt{1-i a x} \sqrt{a x-i} x^{m+1} \left (F_1\left (m+1;-\frac{1}{2},\frac{1}{2};m+2;-i a x,i a x\right )-2 F_1\left (m+1;-\frac{1}{2},\frac{3}{2};m+2;-i a x,i a x\right )\right )}{(m+1) \sqrt{1+i a x} \sqrt{a x+i}} \]
Warning: Unable to verify antiderivative.
[In]
[Out]
________________________________________________________________________________________
Maple [A] time = 0.438, size = 146, normalized size = 0.9 \begin{align*}{\frac{{x}^{1+m}}{1+m}{\mbox{$_2$F$_1$}({\frac{3}{2}},{\frac{1}{2}}+{\frac{m}{2}};\,{\frac{3}{2}}+{\frac{m}{2}};\,-{a}^{2}{x}^{2})}}+{\frac{3\,ia{x}^{2+m}}{2+m}{\mbox{$_2$F$_1$}({\frac{3}{2}},1+{\frac{m}{2}};\,2+{\frac{m}{2}};\,-{a}^{2}{x}^{2})}}-3\,{\frac{{a}^{2}{x}^{3+m}{\mbox{$_2$F$_1$}(3/2,3/2+m/2;\,5/2+m/2;\,-{a}^{2}{x}^{2})}}{3+m}}-{\frac{i{a}^{3}{x}^{4+m}}{4+m}{\mbox{$_2$F$_1$}({\frac{3}{2}},2+{\frac{m}{2}};\,3+{\frac{m}{2}};\,-{a}^{2}{x}^{2})}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Maxima [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{{\left (i \, a x + 1\right )}^{3} x^{m}}{{\left (a^{2} x^{2} + 1\right )}^{\frac{3}{2}}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Fricas [F] time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (\frac{\sqrt{a^{2} x^{2} + 1}{\left (-i \, a x - 1\right )} x^{m}}{a^{2} x^{2} + 2 i \, a x - 1}, x\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{x^{m} \left (i a x + 1\right )^{3}}{\left (a^{2} x^{2} + 1\right )^{\frac{3}{2}}}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Giac [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{{\left (i \, a x + 1\right )}^{3} x^{m}}{{\left (a^{2} x^{2} + 1\right )}^{\frac{3}{2}}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]