Integrand size = 15, antiderivative size = 563 \[ \int \sqrt {a+\frac {b}{x^3}} x^6 \, dx=\frac {15 b^{7/3} \sqrt {a+\frac {b}{x^3}}}{112 a^2 \left (\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )}-\frac {15 b^2 \sqrt {a+\frac {b}{x^3}} x}{112 a^2}+\frac {3 b \sqrt {a+\frac {b}{x^3}} x^4}{56 a}+\frac {1}{7} \sqrt {a+\frac {b}{x^3}} x^7-\frac {15 \sqrt [4]{3} \sqrt {2-\sqrt {3}} b^{7/3} \left (\sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right ) \sqrt {\frac {a^{2/3}+\frac {b^{2/3}}{x^2}-\frac {\sqrt [3]{a} \sqrt [3]{b}}{x}}{\left (\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )^2}} E\left (\arcsin \left (\frac {\left (1-\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}}{\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}}\right )|-7-4 \sqrt {3}\right )}{224 a^{5/3} \sqrt {a+\frac {b}{x^3}} \sqrt {\frac {\sqrt [3]{a} \left (\sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )}{\left (\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )^2}}}+\frac {5\ 3^{3/4} b^{7/3} \left (\sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right ) \sqrt {\frac {a^{2/3}+\frac {b^{2/3}}{x^2}-\frac {\sqrt [3]{a} \sqrt [3]{b}}{x}}{\left (\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )^2}} \operatorname {EllipticF}\left (\arcsin \left (\frac {\left (1-\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}}{\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}}\right ),-7-4 \sqrt {3}\right )}{56 \sqrt {2} a^{5/3} \sqrt {a+\frac {b}{x^3}} \sqrt {\frac {\sqrt [3]{a} \left (\sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )}{\left (\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )^2}}} \]
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Time = 0.33 (sec) , antiderivative size = 563, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.400, Rules used = {342, 283, 331, 309, 224, 1891} \[ \int \sqrt {a+\frac {b}{x^3}} x^6 \, dx=\frac {5\ 3^{3/4} b^{7/3} \left (\sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right ) \sqrt {\frac {a^{2/3}-\frac {\sqrt [3]{a} \sqrt [3]{b}}{x}+\frac {b^{2/3}}{x^2}}{\left (\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )^2}} \operatorname {EllipticF}\left (\arcsin \left (\frac {\left (1-\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}}{\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}}\right ),-7-4 \sqrt {3}\right )}{56 \sqrt {2} a^{5/3} \sqrt {a+\frac {b}{x^3}} \sqrt {\frac {\sqrt [3]{a} \left (\sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )}{\left (\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )^2}}}-\frac {15 \sqrt [4]{3} \sqrt {2-\sqrt {3}} b^{7/3} \left (\sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right ) \sqrt {\frac {a^{2/3}-\frac {\sqrt [3]{a} \sqrt [3]{b}}{x}+\frac {b^{2/3}}{x^2}}{\left (\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )^2}} E\left (\arcsin \left (\frac {\left (1-\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}}{\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}}\right )|-7-4 \sqrt {3}\right )}{224 a^{5/3} \sqrt {a+\frac {b}{x^3}} \sqrt {\frac {\sqrt [3]{a} \left (\sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )}{\left (\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )^2}}}+\frac {15 b^{7/3} \sqrt {a+\frac {b}{x^3}}}{112 a^2 \left (\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )}-\frac {15 b^2 x \sqrt {a+\frac {b}{x^3}}}{112 a^2}+\frac {1}{7} x^7 \sqrt {a+\frac {b}{x^3}}+\frac {3 b x^4 \sqrt {a+\frac {b}{x^3}}}{56 a} \]
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Rule 224
Rule 283
Rule 309
Rule 331
Rule 342
Rule 1891
Rubi steps \begin{align*} \text {integral}& = -\text {Subst}\left (\int \frac {\sqrt {a+b x^3}}{x^8} \, dx,x,\frac {1}{x}\right ) \\ & = \frac {1}{7} \sqrt {a+\frac {b}{x^3}} x^7-\frac {1}{14} (3 b) \text {Subst}\left (\int \frac {1}{x^5 \sqrt {a+b x^3}} \, dx,x,\frac {1}{x}\right ) \\ & = \frac {3 b \sqrt {a+\frac {b}{x^3}} x^4}{56 a}+\frac {1}{7} \sqrt {a+\frac {b}{x^3}} x^7+\frac {\left (15 b^2\right ) \text {Subst}\left (\int \frac {1}{x^2 \sqrt {a+b x^3}} \, dx,x,\frac {1}{x}\right )}{112 a} \\ & = -\frac {15 b^2 \sqrt {a+\frac {b}{x^3}} x}{112 a^2}+\frac {3 b \sqrt {a+\frac {b}{x^3}} x^4}{56 a}+\frac {1}{7} \sqrt {a+\frac {b}{x^3}} x^7+\frac {\left (15 b^3\right ) \text {Subst}\left (\int \frac {x}{\sqrt {a+b x^3}} \, dx,x,\frac {1}{x}\right )}{224 a^2} \\ & = -\frac {15 b^2 \sqrt {a+\frac {b}{x^3}} x}{112 a^2}+\frac {3 b \sqrt {a+\frac {b}{x^3}} x^4}{56 a}+\frac {1}{7} \sqrt {a+\frac {b}{x^3}} x^7+\frac {\left (15 b^{8/3}\right ) \text {Subst}\left (\int \frac {\left (1-\sqrt {3}\right ) \sqrt [3]{a}+\sqrt [3]{b} x}{\sqrt {a+b x^3}} \, dx,x,\frac {1}{x}\right )}{224 a^2}-\frac {\left (15 \left (1-\sqrt {3}\right ) b^{8/3}\right ) \text {Subst}\left (\int \frac {1}{\sqrt {a+b x^3}} \, dx,x,\frac {1}{x}\right )}{224 a^{5/3}} \\ & = \frac {15 b^{7/3} \sqrt {a+\frac {b}{x^3}}}{112 a^2 \left (\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )}-\frac {15 b^2 \sqrt {a+\frac {b}{x^3}} x}{112 a^2}+\frac {3 b \sqrt {a+\frac {b}{x^3}} x^4}{56 a}+\frac {1}{7} \sqrt {a+\frac {b}{x^3}} x^7-\frac {15 \sqrt [4]{3} \sqrt {2-\sqrt {3}} b^{7/3} \left (\sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right ) \sqrt {\frac {a^{2/3}+\frac {b^{2/3}}{x^2}-\frac {\sqrt [3]{a} \sqrt [3]{b}}{x}}{\left (\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )^2}} E\left (\sin ^{-1}\left (\frac {\left (1-\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}}{\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}}\right )|-7-4 \sqrt {3}\right )}{224 a^{5/3} \sqrt {a+\frac {b}{x^3}} \sqrt {\frac {\sqrt [3]{a} \left (\sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )}{\left (\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )^2}}}+\frac {5\ 3^{3/4} b^{7/3} \left (\sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right ) \sqrt {\frac {a^{2/3}+\frac {b^{2/3}}{x^2}-\frac {\sqrt [3]{a} \sqrt [3]{b}}{x}}{\left (\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )^2}} F\left (\sin ^{-1}\left (\frac {\left (1-\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}}{\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}}\right )|-7-4 \sqrt {3}\right )}{56 \sqrt {2} a^{5/3} \sqrt {a+\frac {b}{x^3}} \sqrt {\frac {\sqrt [3]{a} \left (\sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )}{\left (\left (1+\sqrt {3}\right ) \sqrt [3]{a}+\frac {\sqrt [3]{b}}{x}\right )^2}}} \\ \end{align*}
Result contains higher order function than in optimal. Order 5 vs. order 4 in optimal.
Time = 10.04 (sec) , antiderivative size = 80, normalized size of antiderivative = 0.14 \[ \int \sqrt {a+\frac {b}{x^3}} x^6 \, dx=\frac {\sqrt {a+\frac {b}{x^3}} x^4 \left (\left (b+a x^3\right ) \sqrt {1+\frac {a x^3}{b}}-b \operatorname {Hypergeometric2F1}\left (-\frac {1}{2},\frac {5}{6},\frac {11}{6},-\frac {a x^3}{b}\right )\right )}{7 a \sqrt {1+\frac {a x^3}{b}}} \]
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Both result and optimal contain complex but leaf count of result is larger than twice the leaf count of optimal. 1126 vs. \(2 (421 ) = 842\).
Time = 0.44 (sec) , antiderivative size = 1127, normalized size of antiderivative = 2.00
method | result | size |
risch | \(\text {Expression too large to display}\) | \(1127\) |
default | \(\text {Expression too large to display}\) | \(2799\) |
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\[ \int \sqrt {a+\frac {b}{x^3}} x^6 \, dx=\int { \sqrt {a + \frac {b}{x^{3}}} x^{6} \,d x } \]
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Time = 0.74 (sec) , antiderivative size = 48, normalized size of antiderivative = 0.09 \[ \int \sqrt {a+\frac {b}{x^3}} x^6 \, dx=- \frac {\sqrt {a} x^{7} \Gamma \left (- \frac {7}{3}\right ) {{}_{2}F_{1}\left (\begin {matrix} - \frac {7}{3}, - \frac {1}{2} \\ - \frac {4}{3} \end {matrix}\middle | {\frac {b e^{i \pi }}{a x^{3}}} \right )}}{3 \Gamma \left (- \frac {4}{3}\right )} \]
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\[ \int \sqrt {a+\frac {b}{x^3}} x^6 \, dx=\int { \sqrt {a + \frac {b}{x^{3}}} x^{6} \,d x } \]
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\[ \int \sqrt {a+\frac {b}{x^3}} x^6 \, dx=\int { \sqrt {a + \frac {b}{x^{3}}} x^{6} \,d x } \]
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Timed out. \[ \int \sqrt {a+\frac {b}{x^3}} x^6 \, dx=\int x^6\,\sqrt {a+\frac {b}{x^3}} \,d x \]
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