Optimal. Leaf size=69 \[ -\frac {3 b}{4 a^2 \sqrt {a+b x^4}}-\frac {1}{4 a x^4 \sqrt {a+b x^4}}+\frac {3 b \tanh ^{-1}\left (\frac {\sqrt {a+b x^4}}{\sqrt {a}}\right )}{4 a^{5/2}} \]
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Rubi [A]
time = 0.03, antiderivative size = 69, normalized size of antiderivative = 1.00, number of steps
used = 5, number of rules used = 5, integrand size = 15, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.333, Rules used = {272, 44, 53, 65,
214} \begin {gather*} \frac {3 b \tanh ^{-1}\left (\frac {\sqrt {a+b x^4}}{\sqrt {a}}\right )}{4 a^{5/2}}-\frac {3 b}{4 a^2 \sqrt {a+b x^4}}-\frac {1}{4 a x^4 \sqrt {a+b x^4}} \end {gather*}
Antiderivative was successfully verified.
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Rule 44
Rule 53
Rule 65
Rule 214
Rule 272
Rubi steps
\begin {align*} \int \frac {1}{x^5 \left (a+b x^4\right )^{3/2}} \, dx &=\frac {1}{4} \text {Subst}\left (\int \frac {1}{x^2 (a+b x)^{3/2}} \, dx,x,x^4\right )\\ &=\frac {1}{2 a x^4 \sqrt {a+b x^4}}+\frac {3 \text {Subst}\left (\int \frac {1}{x^2 \sqrt {a+b x}} \, dx,x,x^4\right )}{4 a}\\ &=\frac {1}{2 a x^4 \sqrt {a+b x^4}}-\frac {3 \sqrt {a+b x^4}}{4 a^2 x^4}-\frac {(3 b) \text {Subst}\left (\int \frac {1}{x \sqrt {a+b x}} \, dx,x,x^4\right )}{8 a^2}\\ &=\frac {1}{2 a x^4 \sqrt {a+b x^4}}-\frac {3 \sqrt {a+b x^4}}{4 a^2 x^4}-\frac {3 \text {Subst}\left (\int \frac {1}{-\frac {a}{b}+\frac {x^2}{b}} \, dx,x,\sqrt {a+b x^4}\right )}{4 a^2}\\ &=\frac {1}{2 a x^4 \sqrt {a+b x^4}}-\frac {3 \sqrt {a+b x^4}}{4 a^2 x^4}+\frac {3 b \tanh ^{-1}\left (\frac {\sqrt {a+b x^4}}{\sqrt {a}}\right )}{4 a^{5/2}}\\ \end {align*}
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Mathematica [A]
time = 0.08, size = 60, normalized size = 0.87 \begin {gather*} \frac {-a-3 b x^4}{4 a^2 x^4 \sqrt {a+b x^4}}+\frac {3 b \tanh ^{-1}\left (\frac {\sqrt {a+b x^4}}{\sqrt {a}}\right )}{4 a^{5/2}} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.17, size = 63, normalized size = 0.91
method | result | size |
default | \(-\frac {1}{4 a \,x^{4} \sqrt {b \,x^{4}+a}}-\frac {3 b}{4 a^{2} \sqrt {b \,x^{4}+a}}+\frac {3 b \ln \left (\frac {2 a +2 \sqrt {a}\, \sqrt {b \,x^{4}+a}}{x^{2}}\right )}{4 a^{\frac {5}{2}}}\) | \(63\) |
risch | \(-\frac {\sqrt {b \,x^{4}+a}}{4 a^{2} x^{4}}-\frac {b}{2 a^{2} \sqrt {b \,x^{4}+a}}+\frac {3 b \ln \left (\frac {2 a +2 \sqrt {a}\, \sqrt {b \,x^{4}+a}}{x^{2}}\right )}{4 a^{\frac {5}{2}}}\) | \(63\) |
elliptic | \(-\frac {1}{4 a \,x^{4} \sqrt {b \,x^{4}+a}}-\frac {3 b}{4 a^{2} \sqrt {b \,x^{4}+a}}+\frac {3 b \ln \left (\frac {2 a +2 \sqrt {a}\, \sqrt {b \,x^{4}+a}}{x^{2}}\right )}{4 a^{\frac {5}{2}}}\) | \(63\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.49, size = 86, normalized size = 1.25 \begin {gather*} -\frac {3 \, {\left (b x^{4} + a\right )} b - 2 \, a b}{4 \, {\left ({\left (b x^{4} + a\right )}^{\frac {3}{2}} a^{2} - \sqrt {b x^{4} + a} a^{3}\right )}} - \frac {3 \, b \log \left (\frac {\sqrt {b x^{4} + a} - \sqrt {a}}{\sqrt {b x^{4} + a} + \sqrt {a}}\right )}{8 \, a^{\frac {5}{2}}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.37, size = 173, normalized size = 2.51 \begin {gather*} \left [\frac {3 \, {\left (b^{2} x^{8} + a b x^{4}\right )} \sqrt {a} \log \left (\frac {b x^{4} + 2 \, \sqrt {b x^{4} + a} \sqrt {a} + 2 \, a}{x^{4}}\right ) - 2 \, {\left (3 \, a b x^{4} + a^{2}\right )} \sqrt {b x^{4} + a}}{8 \, {\left (a^{3} b x^{8} + a^{4} x^{4}\right )}}, -\frac {3 \, {\left (b^{2} x^{8} + a b x^{4}\right )} \sqrt {-a} \arctan \left (\frac {\sqrt {b x^{4} + a} \sqrt {-a}}{a}\right ) + {\left (3 \, a b x^{4} + a^{2}\right )} \sqrt {b x^{4} + a}}{4 \, {\left (a^{3} b x^{8} + a^{4} x^{4}\right )}}\right ] \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A]
time = 1.81, size = 76, normalized size = 1.10 \begin {gather*} - \frac {1}{4 a \sqrt {b} x^{6} \sqrt {\frac {a}{b x^{4}} + 1}} - \frac {3 \sqrt {b}}{4 a^{2} x^{2} \sqrt {\frac {a}{b x^{4}} + 1}} + \frac {3 b \operatorname {asinh}{\left (\frac {\sqrt {a}}{\sqrt {b} x^{2}} \right )}}{4 a^{\frac {5}{2}}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 2.48, size = 72, normalized size = 1.04 \begin {gather*} -\frac {3 \, b \arctan \left (\frac {\sqrt {b x^{4} + a}}{\sqrt {-a}}\right )}{4 \, \sqrt {-a} a^{2}} - \frac {3 \, {\left (b x^{4} + a\right )} b - 2 \, a b}{4 \, {\left ({\left (b x^{4} + a\right )}^{\frac {3}{2}} - \sqrt {b x^{4} + a} a\right )} a^{2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 1.37, size = 53, normalized size = 0.77 \begin {gather*} \frac {3\,b\,\mathrm {atanh}\left (\frac {\sqrt {b\,x^4+a}}{\sqrt {a}}\right )}{4\,a^{5/2}}-\frac {1}{4\,a\,x^4\,\sqrt {b\,x^4+a}}-\frac {3\,b}{4\,a^2\,\sqrt {b\,x^4+a}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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