Integrand size = 16, antiderivative size = 20 \[ \int \frac {1}{x^2 \left (a-b x^4\right )^{3/4}} \, dx=-\frac {\sqrt [4]{a-b x^4}}{a x} \]
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Time = 0.00 (sec) , antiderivative size = 20, normalized size of antiderivative = 1.00, number of steps used = 1, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.062, Rules used = {270} \[ \int \frac {1}{x^2 \left (a-b x^4\right )^{3/4}} \, dx=-\frac {\sqrt [4]{a-b x^4}}{a x} \]
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Rule 270
Rubi steps \begin{align*} \text {integral}& = -\frac {\sqrt [4]{a-b x^4}}{a x} \\ \end{align*}
Time = 0.29 (sec) , antiderivative size = 20, normalized size of antiderivative = 1.00 \[ \int \frac {1}{x^2 \left (a-b x^4\right )^{3/4}} \, dx=-\frac {\sqrt [4]{a-b x^4}}{a x} \]
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Time = 4.42 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.95
method | result | size |
gosper | \(-\frac {\left (-b \,x^{4}+a \right )^{\frac {1}{4}}}{a x}\) | \(19\) |
trager | \(-\frac {\left (-b \,x^{4}+a \right )^{\frac {1}{4}}}{a x}\) | \(19\) |
pseudoelliptic | \(-\frac {\left (-b \,x^{4}+a \right )^{\frac {1}{4}}}{a x}\) | \(19\) |
risch | \(-\frac {\left (-b \,x^{4}+a \right )^{\frac {1}{4}} {\left (\left (-b \,x^{4}+a \right )^{3}\right )}^{\frac {1}{4}}}{a x {\left (-\left (b \,x^{4}-a \right )^{3}\right )}^{\frac {1}{4}}}\) | \(46\) |
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none
Time = 0.27 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.90 \[ \int \frac {1}{x^2 \left (a-b x^4\right )^{3/4}} \, dx=-\frac {{\left (-b x^{4} + a\right )}^{\frac {1}{4}}}{a x} \]
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Result contains complex when optimal does not.
Time = 0.42 (sec) , antiderivative size = 80, normalized size of antiderivative = 4.00 \[ \int \frac {1}{x^2 \left (a-b x^4\right )^{3/4}} \, dx=\begin {cases} \frac {\sqrt [4]{b} \sqrt [4]{\frac {a}{b x^{4}} - 1} \Gamma \left (- \frac {1}{4}\right )}{4 a \Gamma \left (\frac {3}{4}\right )} & \text {for}\: \left |{\frac {a}{b x^{4}}}\right | > 1 \\- \frac {\sqrt [4]{b} \sqrt [4]{- \frac {a}{b x^{4}} + 1} e^{- \frac {3 i \pi }{4}} \Gamma \left (- \frac {1}{4}\right )}{4 a \Gamma \left (\frac {3}{4}\right )} & \text {otherwise} \end {cases} \]
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none
Time = 0.20 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.90 \[ \int \frac {1}{x^2 \left (a-b x^4\right )^{3/4}} \, dx=-\frac {{\left (-b x^{4} + a\right )}^{\frac {1}{4}}}{a x} \]
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\[ \int \frac {1}{x^2 \left (a-b x^4\right )^{3/4}} \, dx=\int { \frac {1}{{\left (-b x^{4} + a\right )}^{\frac {3}{4}} x^{2}} \,d x } \]
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Time = 5.58 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.90 \[ \int \frac {1}{x^2 \left (a-b x^4\right )^{3/4}} \, dx=-\frac {{\left (a-b\,x^4\right )}^{1/4}}{a\,x} \]
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