Optimal. Leaf size=133 \[ -\frac {3 a x^2}{b^7}+\frac {x^4}{4 b^6}+\frac {a^7}{10 b^8 \left (a+b x^2\right )^5}-\frac {7 a^6}{8 b^8 \left (a+b x^2\right )^4}+\frac {7 a^5}{2 b^8 \left (a+b x^2\right )^3}-\frac {35 a^4}{4 b^8 \left (a+b x^2\right )^2}+\frac {35 a^3}{2 b^8 \left (a+b x^2\right )}+\frac {21 a^2 \log \left (a+b x^2\right )}{2 b^8} \]
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Rubi [A]
time = 0.10, antiderivative size = 133, normalized size of antiderivative = 1.00, number of steps
used = 4, number of rules used = 3, integrand size = 24, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.125, Rules used = {28, 272, 45}
\begin {gather*} \frac {a^7}{10 b^8 \left (a+b x^2\right )^5}-\frac {7 a^6}{8 b^8 \left (a+b x^2\right )^4}+\frac {7 a^5}{2 b^8 \left (a+b x^2\right )^3}-\frac {35 a^4}{4 b^8 \left (a+b x^2\right )^2}+\frac {35 a^3}{2 b^8 \left (a+b x^2\right )}+\frac {21 a^2 \log \left (a+b x^2\right )}{2 b^8}-\frac {3 a x^2}{b^7}+\frac {x^4}{4 b^6} \end {gather*}
Antiderivative was successfully verified.
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Rule 28
Rule 45
Rule 272
Rubi steps
\begin {align*} \int \frac {x^{15}}{\left (a^2+2 a b x^2+b^2 x^4\right )^3} \, dx &=b^6 \int \frac {x^{15}}{\left (a b+b^2 x^2\right )^6} \, dx\\ &=\frac {1}{2} b^6 \text {Subst}\left (\int \frac {x^7}{\left (a b+b^2 x\right )^6} \, dx,x,x^2\right )\\ &=\frac {1}{2} b^6 \text {Subst}\left (\int \left (-\frac {6 a}{b^{13}}+\frac {x}{b^{12}}-\frac {a^7}{b^{13} (a+b x)^6}+\frac {7 a^6}{b^{13} (a+b x)^5}-\frac {21 a^5}{b^{13} (a+b x)^4}+\frac {35 a^4}{b^{13} (a+b x)^3}-\frac {35 a^3}{b^{13} (a+b x)^2}+\frac {21 a^2}{b^{13} (a+b x)}\right ) \, dx,x,x^2\right )\\ &=-\frac {3 a x^2}{b^7}+\frac {x^4}{4 b^6}+\frac {a^7}{10 b^8 \left (a+b x^2\right )^5}-\frac {7 a^6}{8 b^8 \left (a+b x^2\right )^4}+\frac {7 a^5}{2 b^8 \left (a+b x^2\right )^3}-\frac {35 a^4}{4 b^8 \left (a+b x^2\right )^2}+\frac {35 a^3}{2 b^8 \left (a+b x^2\right )}+\frac {21 a^2 \log \left (a+b x^2\right )}{2 b^8}\\ \end {align*}
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Mathematica [A]
time = 0.02, size = 114, normalized size = 0.86 \begin {gather*} \frac {459 a^7+1875 a^6 b x^2+2700 a^5 b^2 x^4+1300 a^4 b^3 x^6-400 a^3 b^4 x^8-500 a^2 b^5 x^{10}-70 a b^6 x^{12}+10 b^7 x^{14}+420 a^2 \left (a+b x^2\right )^5 \log \left (a+b x^2\right )}{40 b^8 \left (a+b x^2\right )^5} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.08, size = 124, normalized size = 0.93
method | result | size |
norman | \(\frac {\frac {x^{14}}{4 b}-\frac {7 a \,x^{12}}{4 b^{2}}+\frac {959 a^{7}}{40 b^{8}}+\frac {105 a^{3} x^{8}}{2 b^{4}}+\frac {315 a^{4} x^{6}}{2 b^{5}}+\frac {385 a^{5} x^{4}}{2 b^{6}}+\frac {875 a^{6} x^{2}}{8 b^{7}}}{\left (b \,x^{2}+a \right )^{5}}+\frac {21 a^{2} \ln \left (b \,x^{2}+a \right )}{2 b^{8}}\) | \(98\) |
default | \(\frac {\left (-b \,x^{2}+6 a \right )^{2}}{4 b^{8}}+\frac {a^{2} \left (-\frac {7 a^{4}}{4 b \left (b \,x^{2}+a \right )^{4}}+\frac {35 a}{b \left (b \,x^{2}+a \right )}+\frac {a^{5}}{5 b \left (b \,x^{2}+a \right )^{5}}-\frac {35 a^{2}}{2 b \left (b \,x^{2}+a \right )^{2}}+\frac {7 a^{3}}{b \left (b \,x^{2}+a \right )^{3}}+\frac {21 \ln \left (b \,x^{2}+a \right )}{b}\right )}{2 b^{7}}\) | \(124\) |
risch | \(\frac {x^{4}}{4 b^{6}}-\frac {3 a \,x^{2}}{b^{7}}+\frac {9 a^{2}}{b^{8}}+\frac {\frac {35 a^{3} b^{3} x^{8}}{2}+\frac {245 a^{4} b^{2} x^{6}}{4}+\frac {329 a^{5} b \,x^{4}}{4}+\frac {399 a^{6} x^{2}}{8}+\frac {459 a^{7}}{40 b}}{b^{7} \left (b \,x^{2}+a \right ) \left (b^{2} x^{4}+2 a b \,x^{2}+a^{2}\right )^{2}}+\frac {21 a^{2} \ln \left (b \,x^{2}+a \right )}{2 b^{8}}\) | \(124\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.28, size = 143, normalized size = 1.08 \begin {gather*} \frac {700 \, a^{3} b^{4} x^{8} + 2450 \, a^{4} b^{3} x^{6} + 3290 \, a^{5} b^{2} x^{4} + 1995 \, a^{6} b x^{2} + 459 \, a^{7}}{40 \, {\left (b^{13} x^{10} + 5 \, a b^{12} x^{8} + 10 \, a^{2} b^{11} x^{6} + 10 \, a^{3} b^{10} x^{4} + 5 \, a^{4} b^{9} x^{2} + a^{5} b^{8}\right )}} + \frac {21 \, a^{2} \log \left (b x^{2} + a\right )}{2 \, b^{8}} + \frac {b x^{4} - 12 \, a x^{2}}{4 \, b^{7}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.35, size = 203, normalized size = 1.53 \begin {gather*} \frac {10 \, b^{7} x^{14} - 70 \, a b^{6} x^{12} - 500 \, a^{2} b^{5} x^{10} - 400 \, a^{3} b^{4} x^{8} + 1300 \, a^{4} b^{3} x^{6} + 2700 \, a^{5} b^{2} x^{4} + 1875 \, a^{6} b x^{2} + 459 \, a^{7} + 420 \, {\left (a^{2} b^{5} x^{10} + 5 \, a^{3} b^{4} x^{8} + 10 \, a^{4} b^{3} x^{6} + 10 \, a^{5} b^{2} x^{4} + 5 \, a^{6} b x^{2} + a^{7}\right )} \log \left (b x^{2} + a\right )}{40 \, {\left (b^{13} x^{10} + 5 \, a b^{12} x^{8} + 10 \, a^{2} b^{11} x^{6} + 10 \, a^{3} b^{10} x^{4} + 5 \, a^{4} b^{9} x^{2} + a^{5} b^{8}\right )}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A]
time = 0.48, size = 150, normalized size = 1.13 \begin {gather*} \frac {21 a^{2} \log {\left (a + b x^{2} \right )}}{2 b^{8}} - \frac {3 a x^{2}}{b^{7}} + \frac {459 a^{7} + 1995 a^{6} b x^{2} + 3290 a^{5} b^{2} x^{4} + 2450 a^{4} b^{3} x^{6} + 700 a^{3} b^{4} x^{8}}{40 a^{5} b^{8} + 200 a^{4} b^{9} x^{2} + 400 a^{3} b^{10} x^{4} + 400 a^{2} b^{11} x^{6} + 200 a b^{12} x^{8} + 40 b^{13} x^{10}} + \frac {x^{4}}{4 b^{6}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 4.13, size = 113, normalized size = 0.85 \begin {gather*} \frac {21 \, a^{2} \log \left ({\left | b x^{2} + a \right |}\right )}{2 \, b^{8}} + \frac {b^{6} x^{4} - 12 \, a b^{5} x^{2}}{4 \, b^{12}} - \frac {959 \, a^{2} b^{5} x^{10} + 4095 \, a^{3} b^{4} x^{8} + 7140 \, a^{4} b^{3} x^{6} + 6300 \, a^{5} b^{2} x^{4} + 2800 \, a^{6} b x^{2} + 500 \, a^{7}}{40 \, {\left (b x^{2} + a\right )}^{5} b^{8}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.13, size = 142, normalized size = 1.07 \begin {gather*} \frac {\frac {459\,a^7}{40\,b}+\frac {399\,a^6\,x^2}{8}+\frac {329\,a^5\,b\,x^4}{4}+\frac {245\,a^4\,b^2\,x^6}{4}+\frac {35\,a^3\,b^3\,x^8}{2}}{a^5\,b^7+5\,a^4\,b^8\,x^2+10\,a^3\,b^9\,x^4+10\,a^2\,b^{10}\,x^6+5\,a\,b^{11}\,x^8+b^{12}\,x^{10}}+\frac {x^4}{4\,b^6}-\frac {3\,a\,x^2}{b^7}+\frac {21\,a^2\,\ln \left (b\,x^2+a\right )}{2\,b^8} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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