Integrand size = 15, antiderivative size = 66 \[ \int \frac {\sqrt [4]{a+b x^4}}{x} \, dx=\sqrt [4]{a+b x^4}-\frac {1}{2} \sqrt [4]{a} \arctan \left (\frac {\sqrt [4]{a+b x^4}}{\sqrt [4]{a}}\right )-\frac {1}{2} \sqrt [4]{a} \text {arctanh}\left (\frac {\sqrt [4]{a+b x^4}}{\sqrt [4]{a}}\right ) \]
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Time = 0.03 (sec) , antiderivative size = 66, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.400, Rules used = {272, 52, 65, 218, 212, 209} \[ \int \frac {\sqrt [4]{a+b x^4}}{x} \, dx=-\frac {1}{2} \sqrt [4]{a} \arctan \left (\frac {\sqrt [4]{a+b x^4}}{\sqrt [4]{a}}\right )-\frac {1}{2} \sqrt [4]{a} \text {arctanh}\left (\frac {\sqrt [4]{a+b x^4}}{\sqrt [4]{a}}\right )+\sqrt [4]{a+b x^4} \]
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Rule 52
Rule 65
Rule 209
Rule 212
Rule 218
Rule 272
Rubi steps \begin{align*} \text {integral}& = \frac {1}{4} \text {Subst}\left (\int \frac {\sqrt [4]{a+b x}}{x} \, dx,x,x^4\right ) \\ & = \sqrt [4]{a+b x^4}+\frac {1}{4} a \text {Subst}\left (\int \frac {1}{x (a+b x)^{3/4}} \, dx,x,x^4\right ) \\ & = \sqrt [4]{a+b x^4}+\frac {a \text {Subst}\left (\int \frac {1}{-\frac {a}{b}+\frac {x^4}{b}} \, dx,x,\sqrt [4]{a+b x^4}\right )}{b} \\ & = \sqrt [4]{a+b x^4}-\frac {1}{2} \sqrt {a} \text {Subst}\left (\int \frac {1}{\sqrt {a}-x^2} \, dx,x,\sqrt [4]{a+b x^4}\right )-\frac {1}{2} \sqrt {a} \text {Subst}\left (\int \frac {1}{\sqrt {a}+x^2} \, dx,x,\sqrt [4]{a+b x^4}\right ) \\ & = \sqrt [4]{a+b x^4}-\frac {1}{2} \sqrt [4]{a} \tan ^{-1}\left (\frac {\sqrt [4]{a+b x^4}}{\sqrt [4]{a}}\right )-\frac {1}{2} \sqrt [4]{a} \tanh ^{-1}\left (\frac {\sqrt [4]{a+b x^4}}{\sqrt [4]{a}}\right ) \\ \end{align*}
Time = 0.09 (sec) , antiderivative size = 66, normalized size of antiderivative = 1.00 \[ \int \frac {\sqrt [4]{a+b x^4}}{x} \, dx=\sqrt [4]{a+b x^4}-\frac {1}{2} \sqrt [4]{a} \arctan \left (\frac {\sqrt [4]{a+b x^4}}{\sqrt [4]{a}}\right )-\frac {1}{2} \sqrt [4]{a} \text {arctanh}\left (\frac {\sqrt [4]{a+b x^4}}{\sqrt [4]{a}}\right ) \]
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Time = 4.77 (sec) , antiderivative size = 71, normalized size of antiderivative = 1.08
method | result | size |
pseudoelliptic | \(\left (b \,x^{4}+a \right )^{\frac {1}{4}}-\frac {\ln \left (\frac {-\left (b \,x^{4}+a \right )^{\frac {1}{4}}-a^{\frac {1}{4}}}{-\left (b \,x^{4}+a \right )^{\frac {1}{4}}+a^{\frac {1}{4}}}\right ) a^{\frac {1}{4}}}{4}-\frac {a^{\frac {1}{4}} \arctan \left (\frac {\left (b \,x^{4}+a \right )^{\frac {1}{4}}}{a^{\frac {1}{4}}}\right )}{2}\) | \(71\) |
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Result contains complex when optimal does not.
Time = 0.27 (sec) , antiderivative size = 92, normalized size of antiderivative = 1.39 \[ \int \frac {\sqrt [4]{a+b x^4}}{x} \, dx=-\frac {1}{4} \, a^{\frac {1}{4}} \log \left ({\left (b x^{4} + a\right )}^{\frac {1}{4}} + a^{\frac {1}{4}}\right ) - \frac {1}{4} i \, a^{\frac {1}{4}} \log \left ({\left (b x^{4} + a\right )}^{\frac {1}{4}} + i \, a^{\frac {1}{4}}\right ) + \frac {1}{4} i \, a^{\frac {1}{4}} \log \left ({\left (b x^{4} + a\right )}^{\frac {1}{4}} - i \, a^{\frac {1}{4}}\right ) + \frac {1}{4} \, a^{\frac {1}{4}} \log \left ({\left (b x^{4} + a\right )}^{\frac {1}{4}} - a^{\frac {1}{4}}\right ) + {\left (b x^{4} + a\right )}^{\frac {1}{4}} \]
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Result contains complex when optimal does not.
Time = 0.63 (sec) , antiderivative size = 42, normalized size of antiderivative = 0.64 \[ \int \frac {\sqrt [4]{a+b x^4}}{x} \, dx=- \frac {\sqrt [4]{b} x \Gamma \left (- \frac {1}{4}\right ) {{}_{2}F_{1}\left (\begin {matrix} - \frac {1}{4}, - \frac {1}{4} \\ \frac {3}{4} \end {matrix}\middle | {\frac {a e^{i \pi }}{b x^{4}}} \right )}}{4 \Gamma \left (\frac {3}{4}\right )} \]
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none
Time = 0.28 (sec) , antiderivative size = 66, normalized size of antiderivative = 1.00 \[ \int \frac {\sqrt [4]{a+b x^4}}{x} \, dx=-\frac {1}{2} \, a^{\frac {1}{4}} \arctan \left (\frac {{\left (b x^{4} + a\right )}^{\frac {1}{4}}}{a^{\frac {1}{4}}}\right ) + \frac {1}{4} \, a^{\frac {1}{4}} \log \left (\frac {{\left (b x^{4} + a\right )}^{\frac {1}{4}} - a^{\frac {1}{4}}}{{\left (b x^{4} + a\right )}^{\frac {1}{4}} + a^{\frac {1}{4}}}\right ) + {\left (b x^{4} + a\right )}^{\frac {1}{4}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 183 vs. \(2 (48) = 96\).
Time = 0.29 (sec) , antiderivative size = 183, normalized size of antiderivative = 2.77 \[ \int \frac {\sqrt [4]{a+b x^4}}{x} \, dx=-\frac {1}{4} \, \sqrt {2} \left (-a\right )^{\frac {1}{4}} \arctan \left (\frac {\sqrt {2} {\left (\sqrt {2} \left (-a\right )^{\frac {1}{4}} + 2 \, {\left (b x^{4} + a\right )}^{\frac {1}{4}}\right )}}{2 \, \left (-a\right )^{\frac {1}{4}}}\right ) - \frac {1}{4} \, \sqrt {2} \left (-a\right )^{\frac {1}{4}} \arctan \left (-\frac {\sqrt {2} {\left (\sqrt {2} \left (-a\right )^{\frac {1}{4}} - 2 \, {\left (b x^{4} + a\right )}^{\frac {1}{4}}\right )}}{2 \, \left (-a\right )^{\frac {1}{4}}}\right ) - \frac {1}{8} \, \sqrt {2} \left (-a\right )^{\frac {1}{4}} \log \left (\sqrt {2} {\left (b x^{4} + a\right )}^{\frac {1}{4}} \left (-a\right )^{\frac {1}{4}} + \sqrt {b x^{4} + a} + \sqrt {-a}\right ) + \frac {1}{8} \, \sqrt {2} \left (-a\right )^{\frac {1}{4}} \log \left (-\sqrt {2} {\left (b x^{4} + a\right )}^{\frac {1}{4}} \left (-a\right )^{\frac {1}{4}} + \sqrt {b x^{4} + a} + \sqrt {-a}\right ) + {\left (b x^{4} + a\right )}^{\frac {1}{4}} \]
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Time = 5.81 (sec) , antiderivative size = 48, normalized size of antiderivative = 0.73 \[ \int \frac {\sqrt [4]{a+b x^4}}{x} \, dx={\left (b\,x^4+a\right )}^{1/4}-\frac {a^{1/4}\,\mathrm {atanh}\left (\frac {{\left (b\,x^4+a\right )}^{1/4}}{a^{1/4}}\right )}{2}-\frac {a^{1/4}\,\mathrm {atan}\left (\frac {{\left (b\,x^4+a\right )}^{1/4}}{a^{1/4}}\right )}{2} \]
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