Optimal. Leaf size=173 \[ \frac{21}{16} a^4 x \sqrt{a^2-b^2 x^2}-\frac{7 a^3 \left (a^2-b^2 x^2\right )^{3/2}}{8 b}-\frac{21 a^2 (a+b x) \left (a^2-b^2 x^2\right )^{3/2}}{40 b}-\frac{3 a (a+b x)^2 \left (a^2-b^2 x^2\right )^{3/2}}{10 b}-\frac{(a+b x)^3 \left (a^2-b^2 x^2\right )^{3/2}}{6 b}+\frac{21 a^6 \tan ^{-1}\left (\frac{b x}{\sqrt{a^2-b^2 x^2}}\right )}{16 b} \]
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Rubi [A] time = 0.0757016, antiderivative size = 173, normalized size of antiderivative = 1., number of steps used = 7, number of rules used = 5, integrand size = 24, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.208, Rules used = {671, 641, 195, 217, 203} \[ \frac{21}{16} a^4 x \sqrt{a^2-b^2 x^2}-\frac{7 a^3 \left (a^2-b^2 x^2\right )^{3/2}}{8 b}-\frac{21 a^2 (a+b x) \left (a^2-b^2 x^2\right )^{3/2}}{40 b}-\frac{3 a (a+b x)^2 \left (a^2-b^2 x^2\right )^{3/2}}{10 b}-\frac{(a+b x)^3 \left (a^2-b^2 x^2\right )^{3/2}}{6 b}+\frac{21 a^6 \tan ^{-1}\left (\frac{b x}{\sqrt{a^2-b^2 x^2}}\right )}{16 b} \]
Antiderivative was successfully verified.
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Rule 671
Rule 641
Rule 195
Rule 217
Rule 203
Rubi steps
\begin{align*} \int (a+b x)^4 \sqrt{a^2-b^2 x^2} \, dx &=-\frac{(a+b x)^3 \left (a^2-b^2 x^2\right )^{3/2}}{6 b}+\frac{1}{2} (3 a) \int (a+b x)^3 \sqrt{a^2-b^2 x^2} \, dx\\ &=-\frac{3 a (a+b x)^2 \left (a^2-b^2 x^2\right )^{3/2}}{10 b}-\frac{(a+b x)^3 \left (a^2-b^2 x^2\right )^{3/2}}{6 b}+\frac{1}{10} \left (21 a^2\right ) \int (a+b x)^2 \sqrt{a^2-b^2 x^2} \, dx\\ &=-\frac{21 a^2 (a+b x) \left (a^2-b^2 x^2\right )^{3/2}}{40 b}-\frac{3 a (a+b x)^2 \left (a^2-b^2 x^2\right )^{3/2}}{10 b}-\frac{(a+b x)^3 \left (a^2-b^2 x^2\right )^{3/2}}{6 b}+\frac{1}{8} \left (21 a^3\right ) \int (a+b x) \sqrt{a^2-b^2 x^2} \, dx\\ &=-\frac{7 a^3 \left (a^2-b^2 x^2\right )^{3/2}}{8 b}-\frac{21 a^2 (a+b x) \left (a^2-b^2 x^2\right )^{3/2}}{40 b}-\frac{3 a (a+b x)^2 \left (a^2-b^2 x^2\right )^{3/2}}{10 b}-\frac{(a+b x)^3 \left (a^2-b^2 x^2\right )^{3/2}}{6 b}+\frac{1}{8} \left (21 a^4\right ) \int \sqrt{a^2-b^2 x^2} \, dx\\ &=\frac{21}{16} a^4 x \sqrt{a^2-b^2 x^2}-\frac{7 a^3 \left (a^2-b^2 x^2\right )^{3/2}}{8 b}-\frac{21 a^2 (a+b x) \left (a^2-b^2 x^2\right )^{3/2}}{40 b}-\frac{3 a (a+b x)^2 \left (a^2-b^2 x^2\right )^{3/2}}{10 b}-\frac{(a+b x)^3 \left (a^2-b^2 x^2\right )^{3/2}}{6 b}+\frac{1}{16} \left (21 a^6\right ) \int \frac{1}{\sqrt{a^2-b^2 x^2}} \, dx\\ &=\frac{21}{16} a^4 x \sqrt{a^2-b^2 x^2}-\frac{7 a^3 \left (a^2-b^2 x^2\right )^{3/2}}{8 b}-\frac{21 a^2 (a+b x) \left (a^2-b^2 x^2\right )^{3/2}}{40 b}-\frac{3 a (a+b x)^2 \left (a^2-b^2 x^2\right )^{3/2}}{10 b}-\frac{(a+b x)^3 \left (a^2-b^2 x^2\right )^{3/2}}{6 b}+\frac{1}{16} \left (21 a^6\right ) \operatorname{Subst}\left (\int \frac{1}{1+b^2 x^2} \, dx,x,\frac{x}{\sqrt{a^2-b^2 x^2}}\right )\\ &=\frac{21}{16} a^4 x \sqrt{a^2-b^2 x^2}-\frac{7 a^3 \left (a^2-b^2 x^2\right )^{3/2}}{8 b}-\frac{21 a^2 (a+b x) \left (a^2-b^2 x^2\right )^{3/2}}{40 b}-\frac{3 a (a+b x)^2 \left (a^2-b^2 x^2\right )^{3/2}}{10 b}-\frac{(a+b x)^3 \left (a^2-b^2 x^2\right )^{3/2}}{6 b}+\frac{21 a^6 \tan ^{-1}\left (\frac{b x}{\sqrt{a^2-b^2 x^2}}\right )}{16 b}\\ \end{align*}
Mathematica [A] time = 0.21049, size = 123, normalized size = 0.71 \[ \frac{\sqrt{a^2-b^2 x^2} \left (\sqrt{1-\frac{b^2 x^2}{a^2}} \left (256 a^3 b^2 x^2+350 a^2 b^3 x^3-75 a^4 b x-448 a^5+192 a b^4 x^4+40 b^5 x^5\right )+315 a^5 \sin ^{-1}\left (\frac{b x}{a}\right )\right )}{240 b \sqrt{1-\frac{b^2 x^2}{a^2}}} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.058, size = 139, normalized size = 0.8 \begin{align*} -{\frac{{b}^{2}{x}^{3}}{6} \left ( -{b}^{2}{x}^{2}+{a}^{2} \right ) ^{{\frac{3}{2}}}}-{\frac{13\,{a}^{2}x}{8} \left ( -{b}^{2}{x}^{2}+{a}^{2} \right ) ^{{\frac{3}{2}}}}+{\frac{21\,{a}^{4}x}{16}\sqrt{-{b}^{2}{x}^{2}+{a}^{2}}}+{\frac{21\,{a}^{6}}{16}\arctan \left ({x\sqrt{{b}^{2}}{\frac{1}{\sqrt{-{b}^{2}{x}^{2}+{a}^{2}}}}} \right ){\frac{1}{\sqrt{{b}^{2}}}}}-{\frac{4\,ab{x}^{2}}{5} \left ( -{b}^{2}{x}^{2}+{a}^{2} \right ) ^{{\frac{3}{2}}}}-{\frac{28\,{a}^{3}}{15\,b} \left ( -{b}^{2}{x}^{2}+{a}^{2} \right ) ^{{\frac{3}{2}}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.60884, size = 177, normalized size = 1.02 \begin{align*} -\frac{1}{6} \,{\left (-b^{2} x^{2} + a^{2}\right )}^{\frac{3}{2}} b^{2} x^{3} + \frac{21 \, a^{6} \arcsin \left (\frac{b^{2} x}{\sqrt{a^{2} b^{2}}}\right )}{16 \, \sqrt{b^{2}}} + \frac{21}{16} \, \sqrt{-b^{2} x^{2} + a^{2}} a^{4} x - \frac{4}{5} \,{\left (-b^{2} x^{2} + a^{2}\right )}^{\frac{3}{2}} a b x^{2} - \frac{13}{8} \,{\left (-b^{2} x^{2} + a^{2}\right )}^{\frac{3}{2}} a^{2} x - \frac{28 \,{\left (-b^{2} x^{2} + a^{2}\right )}^{\frac{3}{2}} a^{3}}{15 \, b} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.83845, size = 234, normalized size = 1.35 \begin{align*} -\frac{630 \, a^{6} \arctan \left (-\frac{a - \sqrt{-b^{2} x^{2} + a^{2}}}{b x}\right ) -{\left (40 \, b^{5} x^{5} + 192 \, a b^{4} x^{4} + 350 \, a^{2} b^{3} x^{3} + 256 \, a^{3} b^{2} x^{2} - 75 \, a^{4} b x - 448 \, a^{5}\right )} \sqrt{-b^{2} x^{2} + a^{2}}}{240 \, b} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [C] time = 12.3879, size = 706, normalized size = 4.08 \begin{align*} \text{result too large to display} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.16998, size = 123, normalized size = 0.71 \begin{align*} \frac{21 \, a^{6} \arcsin \left (\frac{b x}{a}\right ) \mathrm{sgn}\left (a\right ) \mathrm{sgn}\left (b\right )}{16 \,{\left | b \right |}} - \frac{1}{240} \,{\left (\frac{448 \, a^{5}}{b} +{\left (75 \, a^{4} - 2 \,{\left (128 \, a^{3} b +{\left (175 \, a^{2} b^{2} + 4 \,{\left (5 \, b^{4} x + 24 \, a b^{3}\right )} x\right )} x\right )} x\right )} x\right )} \sqrt{-b^{2} x^{2} + a^{2}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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