Optimal. Leaf size=290 \[ -\frac {(25-4 a x) (1-a x)^{5/4} (a x+1)^{3/4}}{96 a^4}-\frac {11 \sqrt [4]{1-a x} (a x+1)^{3/4}}{64 a^4}-\frac {11 \log \left (\frac {\sqrt {1-a x}}{\sqrt {a x+1}}-\frac {\sqrt {2} \sqrt [4]{1-a x}}{\sqrt [4]{a x+1}}+1\right )}{128 \sqrt {2} a^4}+\frac {11 \log \left (\frac {\sqrt {1-a x}}{\sqrt {a x+1}}+\frac {\sqrt {2} \sqrt [4]{1-a x}}{\sqrt [4]{a x+1}}+1\right )}{128 \sqrt {2} a^4}-\frac {11 \tan ^{-1}\left (1-\frac {\sqrt {2} \sqrt [4]{1-a x}}{\sqrt [4]{a x+1}}\right )}{64 \sqrt {2} a^4}+\frac {11 \tan ^{-1}\left (\frac {\sqrt {2} \sqrt [4]{1-a x}}{\sqrt [4]{a x+1}}+1\right )}{64 \sqrt {2} a^4}-\frac {x^2 (1-a x)^{5/4} (a x+1)^{3/4}}{4 a^2} \]
[Out]
________________________________________________________________________________________
Rubi [A] time = 0.21, antiderivative size = 290, normalized size of antiderivative = 1.00, number of steps used = 15, number of rules used = 12, integrand size = 14, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.857, Rules used = {6126, 100, 147, 50, 63, 240, 211, 1165, 628, 1162, 617, 204} \[ -\frac {x^2 (1-a x)^{5/4} (a x+1)^{3/4}}{4 a^2}-\frac {(25-4 a x) (1-a x)^{5/4} (a x+1)^{3/4}}{96 a^4}-\frac {11 \sqrt [4]{1-a x} (a x+1)^{3/4}}{64 a^4}-\frac {11 \log \left (\frac {\sqrt {1-a x}}{\sqrt {a x+1}}-\frac {\sqrt {2} \sqrt [4]{1-a x}}{\sqrt [4]{a x+1}}+1\right )}{128 \sqrt {2} a^4}+\frac {11 \log \left (\frac {\sqrt {1-a x}}{\sqrt {a x+1}}+\frac {\sqrt {2} \sqrt [4]{1-a x}}{\sqrt [4]{a x+1}}+1\right )}{128 \sqrt {2} a^4}-\frac {11 \tan ^{-1}\left (1-\frac {\sqrt {2} \sqrt [4]{1-a x}}{\sqrt [4]{a x+1}}\right )}{64 \sqrt {2} a^4}+\frac {11 \tan ^{-1}\left (\frac {\sqrt {2} \sqrt [4]{1-a x}}{\sqrt [4]{a x+1}}+1\right )}{64 \sqrt {2} a^4} \]
Antiderivative was successfully verified.
[In]
[Out]
Rule 50
Rule 63
Rule 100
Rule 147
Rule 204
Rule 211
Rule 240
Rule 617
Rule 628
Rule 1162
Rule 1165
Rule 6126
Rubi steps
\begin {align*} \int e^{-\frac {1}{2} \tanh ^{-1}(a x)} x^3 \, dx &=\int \frac {x^3 \sqrt [4]{1-a x}}{\sqrt [4]{1+a x}} \, dx\\ &=-\frac {x^2 (1-a x)^{5/4} (1+a x)^{3/4}}{4 a^2}-\frac {\int \frac {x \sqrt [4]{1-a x} \left (-2+\frac {a x}{2}\right )}{\sqrt [4]{1+a x}} \, dx}{4 a^2}\\ &=-\frac {x^2 (1-a x)^{5/4} (1+a x)^{3/4}}{4 a^2}-\frac {(25-4 a x) (1-a x)^{5/4} (1+a x)^{3/4}}{96 a^4}-\frac {11 \int \frac {\sqrt [4]{1-a x}}{\sqrt [4]{1+a x}} \, dx}{64 a^3}\\ &=-\frac {11 \sqrt [4]{1-a x} (1+a x)^{3/4}}{64 a^4}-\frac {x^2 (1-a x)^{5/4} (1+a x)^{3/4}}{4 a^2}-\frac {(25-4 a x) (1-a x)^{5/4} (1+a x)^{3/4}}{96 a^4}-\frac {11 \int \frac {1}{(1-a x)^{3/4} \sqrt [4]{1+a x}} \, dx}{128 a^3}\\ &=-\frac {11 \sqrt [4]{1-a x} (1+a x)^{3/4}}{64 a^4}-\frac {x^2 (1-a x)^{5/4} (1+a x)^{3/4}}{4 a^2}-\frac {(25-4 a x) (1-a x)^{5/4} (1+a x)^{3/4}}{96 a^4}+\frac {11 \operatorname {Subst}\left (\int \frac {1}{\sqrt [4]{2-x^4}} \, dx,x,\sqrt [4]{1-a x}\right )}{32 a^4}\\ &=-\frac {11 \sqrt [4]{1-a x} (1+a x)^{3/4}}{64 a^4}-\frac {x^2 (1-a x)^{5/4} (1+a x)^{3/4}}{4 a^2}-\frac {(25-4 a x) (1-a x)^{5/4} (1+a x)^{3/4}}{96 a^4}+\frac {11 \operatorname {Subst}\left (\int \frac {1}{1+x^4} \, dx,x,\frac {\sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}\right )}{32 a^4}\\ &=-\frac {11 \sqrt [4]{1-a x} (1+a x)^{3/4}}{64 a^4}-\frac {x^2 (1-a x)^{5/4} (1+a x)^{3/4}}{4 a^2}-\frac {(25-4 a x) (1-a x)^{5/4} (1+a x)^{3/4}}{96 a^4}+\frac {11 \operatorname {Subst}\left (\int \frac {1-x^2}{1+x^4} \, dx,x,\frac {\sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}\right )}{64 a^4}+\frac {11 \operatorname {Subst}\left (\int \frac {1+x^2}{1+x^4} \, dx,x,\frac {\sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}\right )}{64 a^4}\\ &=-\frac {11 \sqrt [4]{1-a x} (1+a x)^{3/4}}{64 a^4}-\frac {x^2 (1-a x)^{5/4} (1+a x)^{3/4}}{4 a^2}-\frac {(25-4 a x) (1-a x)^{5/4} (1+a x)^{3/4}}{96 a^4}+\frac {11 \operatorname {Subst}\left (\int \frac {1}{1-\sqrt {2} x+x^2} \, dx,x,\frac {\sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}\right )}{128 a^4}+\frac {11 \operatorname {Subst}\left (\int \frac {1}{1+\sqrt {2} x+x^2} \, dx,x,\frac {\sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}\right )}{128 a^4}-\frac {11 \operatorname {Subst}\left (\int \frac {\sqrt {2}+2 x}{-1-\sqrt {2} x-x^2} \, dx,x,\frac {\sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}\right )}{128 \sqrt {2} a^4}-\frac {11 \operatorname {Subst}\left (\int \frac {\sqrt {2}-2 x}{-1+\sqrt {2} x-x^2} \, dx,x,\frac {\sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}\right )}{128 \sqrt {2} a^4}\\ &=-\frac {11 \sqrt [4]{1-a x} (1+a x)^{3/4}}{64 a^4}-\frac {x^2 (1-a x)^{5/4} (1+a x)^{3/4}}{4 a^2}-\frac {(25-4 a x) (1-a x)^{5/4} (1+a x)^{3/4}}{96 a^4}-\frac {11 \log \left (1+\frac {\sqrt {1-a x}}{\sqrt {1+a x}}-\frac {\sqrt {2} \sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}\right )}{128 \sqrt {2} a^4}+\frac {11 \log \left (1+\frac {\sqrt {1-a x}}{\sqrt {1+a x}}+\frac {\sqrt {2} \sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}\right )}{128 \sqrt {2} a^4}+\frac {11 \operatorname {Subst}\left (\int \frac {1}{-1-x^2} \, dx,x,1-\frac {\sqrt {2} \sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}\right )}{64 \sqrt {2} a^4}-\frac {11 \operatorname {Subst}\left (\int \frac {1}{-1-x^2} \, dx,x,1+\frac {\sqrt {2} \sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}\right )}{64 \sqrt {2} a^4}\\ &=-\frac {11 \sqrt [4]{1-a x} (1+a x)^{3/4}}{64 a^4}-\frac {x^2 (1-a x)^{5/4} (1+a x)^{3/4}}{4 a^2}-\frac {(25-4 a x) (1-a x)^{5/4} (1+a x)^{3/4}}{96 a^4}-\frac {11 \tan ^{-1}\left (1-\frac {\sqrt {2} \sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}\right )}{64 \sqrt {2} a^4}+\frac {11 \tan ^{-1}\left (1+\frac {\sqrt {2} \sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}\right )}{64 \sqrt {2} a^4}-\frac {11 \log \left (1+\frac {\sqrt {1-a x}}{\sqrt {1+a x}}-\frac {\sqrt {2} \sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}\right )}{128 \sqrt {2} a^4}+\frac {11 \log \left (1+\frac {\sqrt {1-a x}}{\sqrt {1+a x}}+\frac {\sqrt {2} \sqrt [4]{1-a x}}{\sqrt [4]{1+a x}}\right )}{128 \sqrt {2} a^4}\\ \end {align*}
________________________________________________________________________________________
Mathematica [C] time = 0.11, size = 116, normalized size = 0.40 \[ \frac {(1-a x)^{5/4} \left (-5 a^2 x^2 (a x+1)^{3/4}+4\ 2^{3/4} \, _2F_1\left (-\frac {7}{4},\frac {5}{4};\frac {9}{4};\frac {1}{2} (1-a x)\right )-12\ 2^{3/4} \, _2F_1\left (-\frac {3}{4},\frac {5}{4};\frac {9}{4};\frac {1}{2} (1-a x)\right )+5\ 2^{3/4} \, _2F_1\left (\frac {1}{4},\frac {5}{4};\frac {9}{4};\frac {1}{2} (1-a x)\right )\right )}{20 a^4} \]
Warning: Unable to verify antiderivative.
[In]
[Out]
________________________________________________________________________________________
fricas [B] time = 0.60, size = 557, normalized size = 1.92 \[ \frac {132 \, \sqrt {2} a^{4} \frac {1}{a^{16}}^{\frac {1}{4}} \arctan \left (\sqrt {2} a^{4} \sqrt {\frac {\sqrt {2} {\left (a^{13} x - a^{12}\right )} \sqrt {-\frac {\sqrt {-a^{2} x^{2} + 1}}{a x - 1}} \frac {1}{a^{16}}^{\frac {3}{4}} + {\left (a^{9} x - a^{8}\right )} \sqrt {\frac {1}{a^{16}}} - \sqrt {-a^{2} x^{2} + 1}}{a x - 1}} \frac {1}{a^{16}}^{\frac {1}{4}} - \sqrt {2} a^{4} \sqrt {-\frac {\sqrt {-a^{2} x^{2} + 1}}{a x - 1}} \frac {1}{a^{16}}^{\frac {1}{4}} - 1\right ) + 132 \, \sqrt {2} a^{4} \frac {1}{a^{16}}^{\frac {1}{4}} \arctan \left (\sqrt {2} a^{4} \sqrt {-\frac {\sqrt {2} {\left (a^{13} x - a^{12}\right )} \sqrt {-\frac {\sqrt {-a^{2} x^{2} + 1}}{a x - 1}} \frac {1}{a^{16}}^{\frac {3}{4}} - {\left (a^{9} x - a^{8}\right )} \sqrt {\frac {1}{a^{16}}} + \sqrt {-a^{2} x^{2} + 1}}{a x - 1}} \frac {1}{a^{16}}^{\frac {1}{4}} - \sqrt {2} a^{4} \sqrt {-\frac {\sqrt {-a^{2} x^{2} + 1}}{a x - 1}} \frac {1}{a^{16}}^{\frac {1}{4}} + 1\right ) + 33 \, \sqrt {2} a^{4} \frac {1}{a^{16}}^{\frac {1}{4}} \log \left (\frac {\sqrt {2} {\left (a^{13} x - a^{12}\right )} \sqrt {-\frac {\sqrt {-a^{2} x^{2} + 1}}{a x - 1}} \frac {1}{a^{16}}^{\frac {3}{4}} + {\left (a^{9} x - a^{8}\right )} \sqrt {\frac {1}{a^{16}}} - \sqrt {-a^{2} x^{2} + 1}}{a x - 1}\right ) - 33 \, \sqrt {2} a^{4} \frac {1}{a^{16}}^{\frac {1}{4}} \log \left (-\frac {\sqrt {2} {\left (a^{13} x - a^{12}\right )} \sqrt {-\frac {\sqrt {-a^{2} x^{2} + 1}}{a x - 1}} \frac {1}{a^{16}}^{\frac {3}{4}} - {\left (a^{9} x - a^{8}\right )} \sqrt {\frac {1}{a^{16}}} + \sqrt {-a^{2} x^{2} + 1}}{a x - 1}\right ) + 4 \, {\left (48 \, a^{3} x^{3} - 56 \, a^{2} x^{2} + 58 \, a x - 83\right )} \sqrt {-a^{2} x^{2} + 1} \sqrt {-\frac {\sqrt {-a^{2} x^{2} + 1}}{a x - 1}}}{768 \, a^{4}} \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
giac [F(-2)] time = 0.00, size = 0, normalized size = 0.00 \[ \text {Exception raised: TypeError} \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
maple [F] time = 0.04, size = 0, normalized size = 0.00 \[ \int \frac {x^{3}}{\sqrt {\frac {a x +1}{\sqrt {-a^{2} x^{2}+1}}}}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
maxima [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {x^{3}}{\sqrt {\frac {a x + 1}{\sqrt {-a^{2} x^{2} + 1}}}}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
mupad [F] time = 0.00, size = -1, normalized size = -0.00 \[ \int \frac {x^3}{\sqrt {\frac {a\,x+1}{\sqrt {1-a^2\,x^2}}}} \,d x \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
sympy [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {x^{3}}{\sqrt {\frac {a x + 1}{\sqrt {- a^{2} x^{2} + 1}}}}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________