Optimal. Leaf size=43 \[ \frac {1}{4} b c x^2+\frac {1}{4} x^4 \left (a+b \tanh ^{-1}\left (\frac {c}{x^2}\right )\right )-\frac {1}{4} b c^2 \tanh ^{-1}\left (\frac {x^2}{c}\right ) \]
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Rubi [A]
time = 0.02, antiderivative size = 43, normalized size of antiderivative = 1.00, number of steps
used = 5, number of rules used = 5, integrand size = 14, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.357, Rules used = {6037, 269, 281,
327, 213} \begin {gather*} \frac {1}{4} x^4 \left (a+b \tanh ^{-1}\left (\frac {c}{x^2}\right )\right )-\frac {1}{4} b c^2 \tanh ^{-1}\left (\frac {x^2}{c}\right )+\frac {1}{4} b c x^2 \end {gather*}
Antiderivative was successfully verified.
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Rule 213
Rule 269
Rule 281
Rule 327
Rule 6037
Rubi steps
\begin {align*} \int x^3 \left (a+b \tanh ^{-1}\left (\frac {c}{x^2}\right )\right ) \, dx &=\frac {1}{4} x^4 \left (a+b \tanh ^{-1}\left (\frac {c}{x^2}\right )\right )+\frac {1}{2} (b c) \int \frac {x}{1-\frac {c^2}{x^4}} \, dx\\ &=\frac {1}{4} x^4 \left (a+b \tanh ^{-1}\left (\frac {c}{x^2}\right )\right )+\frac {1}{2} (b c) \int \frac {x^5}{-c^2+x^4} \, dx\\ &=\frac {1}{4} x^4 \left (a+b \tanh ^{-1}\left (\frac {c}{x^2}\right )\right )+\frac {1}{4} (b c) \text {Subst}\left (\int \frac {x^2}{-c^2+x^2} \, dx,x,x^2\right )\\ &=\frac {1}{4} b c x^2+\frac {1}{4} x^4 \left (a+b \tanh ^{-1}\left (\frac {c}{x^2}\right )\right )+\frac {1}{4} \left (b c^3\right ) \text {Subst}\left (\int \frac {1}{-c^2+x^2} \, dx,x,x^2\right )\\ &=\frac {1}{4} b c x^2+\frac {1}{4} x^4 \left (a+b \tanh ^{-1}\left (\frac {c}{x^2}\right )\right )-\frac {1}{4} b c^2 \tanh ^{-1}\left (\frac {x^2}{c}\right )\\ \end {align*}
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Mathematica [A]
time = 0.01, size = 62, normalized size = 1.44 \begin {gather*} \frac {1}{4} b c x^2+\frac {a x^4}{4}+\frac {1}{4} b x^4 \tanh ^{-1}\left (\frac {c}{x^2}\right )+\frac {1}{8} b c^2 \log \left (-c+x^2\right )-\frac {1}{8} b c^2 \log \left (c+x^2\right ) \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.21, size = 55, normalized size = 1.28
method | result | size |
derivativedivides | \(\frac {x^{4} a}{4}+\frac {\arctanh \left (\frac {c}{x^{2}}\right ) b \,x^{4}}{4}-\frac {b \,c^{2} \ln \left (1+\frac {c}{x^{2}}\right )}{8}+\frac {b \,c^{2} \ln \left (\frac {c}{x^{2}}-1\right )}{8}+\frac {b c \,x^{2}}{4}\) | \(55\) |
default | \(\frac {x^{4} a}{4}+\frac {\arctanh \left (\frac {c}{x^{2}}\right ) b \,x^{4}}{4}-\frac {b \,c^{2} \ln \left (1+\frac {c}{x^{2}}\right )}{8}+\frac {b \,c^{2} \ln \left (\frac {c}{x^{2}}-1\right )}{8}+\frac {b c \,x^{2}}{4}\) | \(55\) |
risch | \(\text {Expression too large to display}\) | \(4322\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.26, size = 49, normalized size = 1.14 \begin {gather*} \frac {1}{4} \, a x^{4} + \frac {1}{8} \, {\left (2 \, x^{4} \operatorname {artanh}\left (\frac {c}{x^{2}}\right ) + {\left (2 \, x^{2} - c \log \left (x^{2} + c\right ) + c \log \left (x^{2} - c\right )\right )} c\right )} b \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.34, size = 44, normalized size = 1.02 \begin {gather*} \frac {1}{4} \, a x^{4} + \frac {1}{4} \, b c x^{2} + \frac {1}{8} \, {\left (b x^{4} - b c^{2}\right )} \log \left (\frac {x^{2} + c}{x^{2} - c}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A]
time = 1.68, size = 41, normalized size = 0.95 \begin {gather*} \frac {a x^{4}}{4} - \frac {b c^{2} \operatorname {atanh}{\left (\frac {c}{x^{2}} \right )}}{4} + \frac {b c x^{2}}{4} + \frac {b x^{4} \operatorname {atanh}{\left (\frac {c}{x^{2}} \right )}}{4} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [B] Leaf count of result is larger than twice the leaf count of optimal. 162 vs.
\(2 (37) = 74\).
time = 0.43, size = 162, normalized size = 3.77 \begin {gather*} \frac {\frac {{\left (x^{2} + c\right )} b c^{3} \log \left (\frac {x^{2} + c}{x^{2} - c}\right )}{{\left (x^{2} - c\right )} {\left (\frac {{\left (x^{2} + c\right )}^{2}}{{\left (x^{2} - c\right )}^{2}} - \frac {2 \, {\left (x^{2} + c\right )}}{x^{2} - c} + 1\right )}} + \frac {\frac {2 \, {\left (x^{2} + c\right )} a c^{3}}{x^{2} - c} + \frac {{\left (x^{2} + c\right )} b c^{3}}{x^{2} - c} - b c^{3}}{\frac {{\left (x^{2} + c\right )}^{2}}{{\left (x^{2} - c\right )}^{2}} - \frac {2 \, {\left (x^{2} + c\right )}}{x^{2} - c} + 1}}{2 \, c} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.86, size = 57, normalized size = 1.33 \begin {gather*} \frac {a\,x^4}{4}+\frac {b\,x^4\,\ln \left (x^2+c\right )}{8}+\frac {b\,c\,x^2}{4}-\frac {b\,x^4\,\ln \left (x^2-c\right )}{8}+\frac {b\,c^2\,\mathrm {atan}\left (\frac {x^2\,1{}\mathrm {i}}{c}\right )\,1{}\mathrm {i}}{4} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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