Integrand size = 25, antiderivative size = 152 \[ \int \frac {1}{(2 b+a x) \sqrt [4]{b x^2+a x^3}} \, dx=-\frac {\arctan \left (\frac {-\frac {\sqrt {a} x^2}{2 \sqrt [4]{b}}+\frac {\sqrt [4]{b} \sqrt {b x^2+a x^3}}{\sqrt {a}}}{x \sqrt [4]{b x^2+a x^3}}\right )}{2 \sqrt {a} b^{3/4}}+\frac {\text {arctanh}\left (\frac {2 \sqrt {a} \sqrt [4]{b} x \sqrt [4]{b x^2+a x^3}}{a x^2+2 \sqrt {b} \sqrt {b x^2+a x^3}}\right )}{2 \sqrt {a} b^{3/4}} \]
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Time = 0.24 (sec) , antiderivative size = 172, normalized size of antiderivative = 1.13, number of steps used = 12, number of rules used = 9, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.360, Rules used = {2081, 108, 107, 504, 1225, 227, 1713, 209, 212} \[ \int \frac {1}{(2 b+a x) \sqrt [4]{b x^2+a x^3}} \, dx=\frac {\sqrt {-\frac {a x}{b}} \sqrt [4]{a x+b} \arctan \left (\frac {\sqrt {2} \sqrt [4]{a x+b}}{\sqrt [4]{-b} \sqrt {-\frac {a x}{b}}}\right )}{\sqrt {2} a \sqrt [4]{-b} \sqrt [4]{a x^3+b x^2}}-\frac {\sqrt {-\frac {a x}{b}} \sqrt [4]{a x+b} \text {arctanh}\left (\frac {\sqrt {2} \sqrt [4]{a x+b}}{\sqrt [4]{-b} \sqrt {-\frac {a x}{b}}}\right )}{\sqrt {2} a \sqrt [4]{-b} \sqrt [4]{a x^3+b x^2}} \]
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Rule 107
Rule 108
Rule 209
Rule 212
Rule 227
Rule 504
Rule 1225
Rule 1713
Rule 2081
Rubi steps \begin{align*} \text {integral}& = \frac {\left (\sqrt {x} \sqrt [4]{b+a x}\right ) \int \frac {1}{\sqrt {x} \sqrt [4]{b+a x} (2 b+a x)} \, dx}{\sqrt [4]{b x^2+a x^3}} \\ & = \frac {\left (\sqrt {-\frac {a x}{b}} \sqrt [4]{b+a x}\right ) \int \frac {1}{\sqrt {-\frac {a x}{b}} \sqrt [4]{b+a x} (2 b+a x)} \, dx}{\sqrt [4]{b x^2+a x^3}} \\ & = -\frac {\left (4 \sqrt {-\frac {a x}{b}} \sqrt [4]{b+a x}\right ) \text {Subst}\left (\int \frac {x^2}{\left (-a b-a x^4\right ) \sqrt {1-\frac {x^4}{b}}} \, dx,x,\sqrt [4]{b+a x}\right )}{\sqrt [4]{b x^2+a x^3}} \\ & = -\frac {\left (2 \sqrt {-\frac {a x}{b}} \sqrt [4]{b+a x}\right ) \text {Subst}\left (\int \frac {1}{\left (\sqrt {-b}-x^2\right ) \sqrt {1-\frac {x^4}{b}}} \, dx,x,\sqrt [4]{b+a x}\right )}{a \sqrt [4]{b x^2+a x^3}}+\frac {\left (2 \sqrt {-\frac {a x}{b}} \sqrt [4]{b+a x}\right ) \text {Subst}\left (\int \frac {1}{\left (\sqrt {-b}+x^2\right ) \sqrt {1-\frac {x^4}{b}}} \, dx,x,\sqrt [4]{b+a x}\right )}{a \sqrt [4]{b x^2+a x^3}} \\ & = \frac {\left (\sqrt {-\frac {a x}{b}} \sqrt [4]{b+a x}\right ) \text {Subst}\left (\int \frac {\sqrt {-b}-x^2}{\left (\sqrt {-b}+x^2\right ) \sqrt {1-\frac {x^4}{b}}} \, dx,x,\sqrt [4]{b+a x}\right )}{a \sqrt {-b} \sqrt [4]{b x^2+a x^3}}-\frac {\left (\sqrt {-\frac {a x}{b}} \sqrt [4]{b+a x}\right ) \text {Subst}\left (\int \frac {\sqrt {-b}+x^2}{\left (\sqrt {-b}-x^2\right ) \sqrt {1-\frac {x^4}{b}}} \, dx,x,\sqrt [4]{b+a x}\right )}{a \sqrt {-b} \sqrt [4]{b x^2+a x^3}} \\ & = -\frac {\left (\sqrt {-\frac {a x}{b}} \sqrt [4]{b+a x}\right ) \text {Subst}\left (\int \frac {1}{\sqrt {-b}-2 x^2} \, dx,x,\frac {\sqrt [4]{b+a x}}{\sqrt {-\frac {a x}{b}}}\right )}{a \sqrt [4]{b x^2+a x^3}}+\frac {\left (\sqrt {-\frac {a x}{b}} \sqrt [4]{b+a x}\right ) \text {Subst}\left (\int \frac {1}{\sqrt {-b}+2 x^2} \, dx,x,\frac {\sqrt [4]{b+a x}}{\sqrt {-\frac {a x}{b}}}\right )}{a \sqrt [4]{b x^2+a x^3}} \\ & = \frac {\sqrt {-\frac {a x}{b}} \sqrt [4]{b+a x} \arctan \left (\frac {\sqrt {2} \sqrt [4]{b+a x}}{\sqrt [4]{-b} \sqrt {-\frac {a x}{b}}}\right )}{\sqrt {2} a \sqrt [4]{-b} \sqrt [4]{b x^2+a x^3}}-\frac {\sqrt {-\frac {a x}{b}} \sqrt [4]{b+a x} \text {arctanh}\left (\frac {\sqrt {2} \sqrt [4]{b+a x}}{\sqrt [4]{-b} \sqrt {-\frac {a x}{b}}}\right )}{\sqrt {2} a \sqrt [4]{-b} \sqrt [4]{b x^2+a x^3}} \\ \end{align*}
Time = 0.24 (sec) , antiderivative size = 143, normalized size of antiderivative = 0.94 \[ \int \frac {1}{(2 b+a x) \sqrt [4]{b x^2+a x^3}} \, dx=\frac {\sqrt {x} \sqrt [4]{b+a x} \left (-\arctan \left (\frac {-a x+2 \sqrt {b} \sqrt {b+a x}}{2 \sqrt {a} \sqrt [4]{b} \sqrt {x} \sqrt [4]{b+a x}}\right )+\text {arctanh}\left (\frac {2 \sqrt {a} \sqrt [4]{b} \sqrt {x} \sqrt [4]{b+a x}}{a x+2 \sqrt {b} \sqrt {b+a x}}\right )\right )}{2 \sqrt {a} b^{3/4} \sqrt [4]{x^2 (b+a x)}} \]
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\[\int \frac {1}{\left (a x +2 b \right ) \left (a \,x^{3}+b \,x^{2}\right )^{\frac {1}{4}}}d x\]
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Timed out. \[ \int \frac {1}{(2 b+a x) \sqrt [4]{b x^2+a x^3}} \, dx=\text {Timed out} \]
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\[ \int \frac {1}{(2 b+a x) \sqrt [4]{b x^2+a x^3}} \, dx=\int \frac {1}{\sqrt [4]{x^{2} \left (a x + b\right )} \left (a x + 2 b\right )}\, dx \]
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\[ \int \frac {1}{(2 b+a x) \sqrt [4]{b x^2+a x^3}} \, dx=\int { \frac {1}{{\left (a x^{3} + b x^{2}\right )}^{\frac {1}{4}} {\left (a x + 2 \, b\right )}} \,d x } \]
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\[ \int \frac {1}{(2 b+a x) \sqrt [4]{b x^2+a x^3}} \, dx=\int { \frac {1}{{\left (a x^{3} + b x^{2}\right )}^{\frac {1}{4}} {\left (a x + 2 \, b\right )}} \,d x } \]
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Timed out. \[ \int \frac {1}{(2 b+a x) \sqrt [4]{b x^2+a x^3}} \, dx=\int \frac {1}{\left (2\,b+a\,x\right )\,{\left (a\,x^3+b\,x^2\right )}^{1/4}} \,d x \]
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