Optimal. Leaf size=40 \[ -\frac {a \left (a-b x^4\right )^{3/4}}{3 b^2}+\frac {\left (a-b x^4\right )^{7/4}}{7 b^2} \]
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Rubi [A]
time = 0.02, antiderivative size = 40, normalized size of antiderivative = 1.00, number of steps
used = 3, number of rules used = 2, integrand size = 16, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.125, Rules used = {272, 45}
\begin {gather*} \frac {\left (a-b x^4\right )^{7/4}}{7 b^2}-\frac {a \left (a-b x^4\right )^{3/4}}{3 b^2} \end {gather*}
Antiderivative was successfully verified.
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Rule 45
Rule 272
Rubi steps
\begin {align*} \int \frac {x^7}{\sqrt [4]{a-b x^4}} \, dx &=\frac {1}{4} \text {Subst}\left (\int \frac {x}{\sqrt [4]{a-b x}} \, dx,x,x^4\right )\\ &=\frac {1}{4} \text {Subst}\left (\int \left (\frac {a}{b \sqrt [4]{a-b x}}-\frac {(a-b x)^{3/4}}{b}\right ) \, dx,x,x^4\right )\\ &=-\frac {a \left (a-b x^4\right )^{3/4}}{3 b^2}+\frac {\left (a-b x^4\right )^{7/4}}{7 b^2}\\ \end {align*}
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Mathematica [A]
time = 0.02, size = 29, normalized size = 0.72 \begin {gather*} \frac {\left (-4 a-3 b x^4\right ) \left (a-b x^4\right )^{3/4}}{21 b^2} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.17, size = 26, normalized size = 0.65
method | result | size |
gosper | \(-\frac {\left (-b \,x^{4}+a \right )^{\frac {3}{4}} \left (3 b \,x^{4}+4 a \right )}{21 b^{2}}\) | \(26\) |
trager | \(-\frac {\left (-b \,x^{4}+a \right )^{\frac {3}{4}} \left (3 b \,x^{4}+4 a \right )}{21 b^{2}}\) | \(26\) |
risch | \(-\frac {\left (-b \,x^{4}+a \right )^{\frac {3}{4}} \left (3 b \,x^{4}+4 a \right )}{21 b^{2}}\) | \(26\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.30, size = 32, normalized size = 0.80 \begin {gather*} \frac {{\left (-b x^{4} + a\right )}^{\frac {7}{4}}}{7 \, b^{2}} - \frac {{\left (-b x^{4} + a\right )}^{\frac {3}{4}} a}{3 \, b^{2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.38, size = 25, normalized size = 0.62 \begin {gather*} -\frac {{\left (3 \, b x^{4} + 4 \, a\right )} {\left (-b x^{4} + a\right )}^{\frac {3}{4}}}{21 \, b^{2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A]
time = 0.31, size = 46, normalized size = 1.15 \begin {gather*} \begin {cases} - \frac {4 a \left (a - b x^{4}\right )^{\frac {3}{4}}}{21 b^{2}} - \frac {x^{4} \left (a - b x^{4}\right )^{\frac {3}{4}}}{7 b} & \text {for}\: b \neq 0 \\\frac {x^{8}}{8 \sqrt [4]{a}} & \text {otherwise} \end {cases} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 0.78, size = 31, normalized size = 0.78 \begin {gather*} \frac {3 \, {\left (-b x^{4} + a\right )}^{\frac {7}{4}} - 7 \, {\left (-b x^{4} + a\right )}^{\frac {3}{4}} a}{21 \, b^{2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 1.15, size = 27, normalized size = 0.68 \begin {gather*} -{\left (a-b\,x^4\right )}^{3/4}\,\left (\frac {4\,a}{21\,b^2}+\frac {x^4}{7\,b}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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