Integrand size = 11, antiderivative size = 12 \[ \int \frac {x}{\sqrt {36+x^4}} \, dx=\frac {1}{2} \text {arcsinh}\left (\frac {x^2}{6}\right ) \]
[Out]
Time = 0.00 (sec) , antiderivative size = 12, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.182, Rules used = {281, 221} \[ \int \frac {x}{\sqrt {36+x^4}} \, dx=\frac {1}{2} \text {arcsinh}\left (\frac {x^2}{6}\right ) \]
[In]
[Out]
Rule 221
Rule 281
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \text {Subst}\left (\int \frac {1}{\sqrt {36+x^2}} \, dx,x,x^2\right ) \\ & = \frac {1}{2} \text {arcsinh}\left (\frac {x^2}{6}\right ) \\ \end{align*}
Time = 0.12 (sec) , antiderivative size = 18, normalized size of antiderivative = 1.50 \[ \int \frac {x}{\sqrt {36+x^4}} \, dx=\frac {1}{2} \log \left (x^2+\sqrt {36+x^4}\right ) \]
[In]
[Out]
Time = 0.18 (sec) , antiderivative size = 9, normalized size of antiderivative = 0.75
method | result | size |
default | \(\frac {\operatorname {arcsinh}\left (\frac {x^{2}}{6}\right )}{2}\) | \(9\) |
meijerg | \(\frac {\operatorname {arcsinh}\left (\frac {x^{2}}{6}\right )}{2}\) | \(9\) |
elliptic | \(\frac {\operatorname {arcsinh}\left (\frac {x^{2}}{6}\right )}{2}\) | \(9\) |
pseudoelliptic | \(\frac {\operatorname {arcsinh}\left (\frac {x^{2}}{6}\right )}{2}\) | \(9\) |
trager | \(\frac {\ln \left (x^{2}+\sqrt {x^{4}+36}\right )}{2}\) | \(15\) |
[In]
[Out]
none
Time = 0.24 (sec) , antiderivative size = 16, normalized size of antiderivative = 1.33 \[ \int \frac {x}{\sqrt {36+x^4}} \, dx=-\frac {1}{2} \, \log \left (-x^{2} + \sqrt {x^{4} + 36}\right ) \]
[In]
[Out]
Time = 0.49 (sec) , antiderivative size = 7, normalized size of antiderivative = 0.58 \[ \int \frac {x}{\sqrt {36+x^4}} \, dx=\frac {\operatorname {asinh}{\left (\frac {x^{2}}{6} \right )}}{2} \]
[In]
[Out]
Leaf count of result is larger than twice the leaf count of optimal. 33 vs. \(2 (8) = 16\).
Time = 0.19 (sec) , antiderivative size = 33, normalized size of antiderivative = 2.75 \[ \int \frac {x}{\sqrt {36+x^4}} \, dx=\frac {1}{4} \, \log \left (\frac {\sqrt {x^{4} + 36}}{x^{2}} + 1\right ) - \frac {1}{4} \, \log \left (\frac {\sqrt {x^{4} + 36}}{x^{2}} - 1\right ) \]
[In]
[Out]
none
Time = 0.26 (sec) , antiderivative size = 16, normalized size of antiderivative = 1.33 \[ \int \frac {x}{\sqrt {36+x^4}} \, dx=-\frac {1}{2} \, \log \left (-x^{2} + \sqrt {x^{4} + 36}\right ) \]
[In]
[Out]
Time = 0.04 (sec) , antiderivative size = 8, normalized size of antiderivative = 0.67 \[ \int \frac {x}{\sqrt {36+x^4}} \, dx=\frac {\mathrm {asinh}\left (\frac {x^2}{6}\right )}{2} \]
[In]
[Out]