Optimal. Leaf size=33 \[ \frac {a}{4 c^2 \left (a+c x^4\right )}+\frac {\log \left (a+c x^4\right )}{4 c^2} \]
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Rubi [A] time = 0.02, antiderivative size = 33, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.154, Rules used = {266, 43} \[ \frac {a}{4 c^2 \left (a+c x^4\right )}+\frac {\log \left (a+c x^4\right )}{4 c^2} \]
Antiderivative was successfully verified.
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Rule 43
Rule 266
Rubi steps
\begin {align*} \int \frac {x^7}{\left (a+c x^4\right )^2} \, dx &=\frac {1}{4} \operatorname {Subst}\left (\int \frac {x}{(a+c x)^2} \, dx,x,x^4\right )\\ &=\frac {1}{4} \operatorname {Subst}\left (\int \left (-\frac {a}{c (a+c x)^2}+\frac {1}{c (a+c x)}\right ) \, dx,x,x^4\right )\\ &=\frac {a}{4 c^2 \left (a+c x^4\right )}+\frac {\log \left (a+c x^4\right )}{4 c^2}\\ \end {align*}
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Mathematica [A] time = 0.01, size = 27, normalized size = 0.82 \[ \frac {\frac {a}{a+c x^4}+\log \left (a+c x^4\right )}{4 c^2} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.64, size = 35, normalized size = 1.06 \[ \frac {{\left (c x^{4} + a\right )} \log \left (c x^{4} + a\right ) + a}{4 \, {\left (c^{3} x^{4} + a c^{2}\right )}} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.20, size = 48, normalized size = 1.45 \[ -\frac {\frac {\log \left (\frac {{\left | c x^{4} + a \right |}}{{\left (c x^{4} + a\right )}^{2} {\left | c \right |}}\right )}{c} - \frac {a}{{\left (c x^{4} + a\right )} c}}{4 \, c} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.01, size = 30, normalized size = 0.91 \[ \frac {a}{4 \left (c \,x^{4}+a \right ) c^{2}}+\frac {\ln \left (c \,x^{4}+a \right )}{4 c^{2}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 1.28, size = 32, normalized size = 0.97 \[ \frac {a}{4 \, {\left (c^{3} x^{4} + a c^{2}\right )}} + \frac {\log \left (c x^{4} + a\right )}{4 \, c^{2}} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.05, size = 29, normalized size = 0.88 \[ \frac {\ln \left (c\,x^4+a\right )}{4\,c^2}+\frac {a}{4\,c^2\,\left (c\,x^4+a\right )} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.34, size = 29, normalized size = 0.88 \[ \frac {a}{4 a c^{2} + 4 c^{3} x^{4}} + \frac {\log {\left (a + c x^{4} \right )}}{4 c^{2}} \]
Verification of antiderivative is not currently implemented for this CAS.
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