Integrand size = 20, antiderivative size = 33 \[ \int \frac {(1+x)^2}{x^2 \sqrt {1-x^2}} \, dx=-\frac {\sqrt {1-x^2}}{x}+\arcsin (x)-2 \text {arctanh}\left (\sqrt {1-x^2}\right ) \]
[Out]
Time = 0.04 (sec) , antiderivative size = 33, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.300, Rules used = {1821, 858, 222, 272, 65, 212} \[ \int \frac {(1+x)^2}{x^2 \sqrt {1-x^2}} \, dx=\arcsin (x)-2 \text {arctanh}\left (\sqrt {1-x^2}\right )-\frac {\sqrt {1-x^2}}{x} \]
[In]
[Out]
Rule 65
Rule 212
Rule 222
Rule 272
Rule 858
Rule 1821
Rubi steps \begin{align*} \text {integral}& = -\frac {\sqrt {1-x^2}}{x}-\int \frac {-2-x}{x \sqrt {1-x^2}} \, dx \\ & = -\frac {\sqrt {1-x^2}}{x}+2 \int \frac {1}{x \sqrt {1-x^2}} \, dx+\int \frac {1}{\sqrt {1-x^2}} \, dx \\ & = -\frac {\sqrt {1-x^2}}{x}+\sin ^{-1}(x)+\text {Subst}\left (\int \frac {1}{\sqrt {1-x} x} \, dx,x,x^2\right ) \\ & = -\frac {\sqrt {1-x^2}}{x}+\sin ^{-1}(x)-2 \text {Subst}\left (\int \frac {1}{1-x^2} \, dx,x,\sqrt {1-x^2}\right ) \\ & = -\frac {\sqrt {1-x^2}}{x}+\sin ^{-1}(x)-2 \tanh ^{-1}\left (\sqrt {1-x^2}\right ) \\ \end{align*}
Time = 0.09 (sec) , antiderivative size = 57, normalized size of antiderivative = 1.73 \[ \int \frac {(1+x)^2}{x^2 \sqrt {1-x^2}} \, dx=-\frac {\sqrt {1-x^2}}{x}+2 \arctan \left (\frac {x}{-1+\sqrt {1-x^2}}\right )-2 \log (x)+2 \log \left (-1+\sqrt {1-x^2}\right ) \]
[In]
[Out]
Time = 0.35 (sec) , antiderivative size = 30, normalized size of antiderivative = 0.91
method | result | size |
default | \(\arcsin \left (x \right )-\frac {\sqrt {-x^{2}+1}}{x}-2 \,\operatorname {arctanh}\left (\frac {1}{\sqrt {-x^{2}+1}}\right )\) | \(30\) |
risch | \(\frac {x^{2}-1}{x \sqrt {-x^{2}+1}}+\arcsin \left (x \right )-2 \,\operatorname {arctanh}\left (\frac {1}{\sqrt {-x^{2}+1}}\right )\) | \(34\) |
meijerg | \(-\frac {\sqrt {-x^{2}+1}}{x}+\frac {-2 \sqrt {\pi }\, \ln \left (\frac {1}{2}+\frac {\sqrt {-x^{2}+1}}{2}\right )+\left (-2 \ln \left (2\right )+2 \ln \left (x \right )+i \pi \right ) \sqrt {\pi }}{\sqrt {\pi }}+\arcsin \left (x \right )\) | \(59\) |
trager | \(-\frac {\sqrt {-x^{2}+1}}{x}+2 \ln \left (\frac {\sqrt {-x^{2}+1}-1}{x}\right )-\operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) \ln \left (\operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) x +\sqrt {-x^{2}+1}\right )\) | \(61\) |
[In]
[Out]
none
Time = 0.26 (sec) , antiderivative size = 53, normalized size of antiderivative = 1.61 \[ \int \frac {(1+x)^2}{x^2 \sqrt {1-x^2}} \, dx=-\frac {2 \, x \arctan \left (\frac {\sqrt {-x^{2} + 1} - 1}{x}\right ) - 2 \, x \log \left (\frac {\sqrt {-x^{2} + 1} - 1}{x}\right ) + \sqrt {-x^{2} + 1}}{x} \]
[In]
[Out]
Result contains complex when optimal does not.
Time = 1.87 (sec) , antiderivative size = 51, normalized size of antiderivative = 1.55 \[ \int \frac {(1+x)^2}{x^2 \sqrt {1-x^2}} \, dx=\begin {cases} - \frac {i \sqrt {x^{2} - 1}}{x} & \text {for}\: \left |{x^{2}}\right | > 1 \\- \frac {\sqrt {1 - x^{2}}}{x} & \text {otherwise} \end {cases} + 2 \left (\begin {cases} - \operatorname {acosh}{\left (\frac {1}{x} \right )} & \text {for}\: \frac {1}{\left |{x^{2}}\right |} > 1 \\i \operatorname {asin}{\left (\frac {1}{x} \right )} & \text {otherwise} \end {cases}\right ) + \operatorname {asin}{\left (x \right )} \]
[In]
[Out]
none
Time = 0.28 (sec) , antiderivative size = 42, normalized size of antiderivative = 1.27 \[ \int \frac {(1+x)^2}{x^2 \sqrt {1-x^2}} \, dx=-\frac {\sqrt {-x^{2} + 1}}{x} + \arcsin \left (x\right ) - 2 \, \log \left (\frac {2 \, \sqrt {-x^{2} + 1}}{{\left | x \right |}} + \frac {2}{{\left | x \right |}}\right ) \]
[In]
[Out]
none
Time = 0.28 (sec) , antiderivative size = 55, normalized size of antiderivative = 1.67 \[ \int \frac {(1+x)^2}{x^2 \sqrt {1-x^2}} \, dx=\frac {x}{2 \, {\left (\sqrt {-x^{2} + 1} - 1\right )}} - \frac {\sqrt {-x^{2} + 1} - 1}{2 \, x} + \arcsin \left (x\right ) + 2 \, \log \left (-\frac {\sqrt {-x^{2} + 1} - 1}{{\left | x \right |}}\right ) \]
[In]
[Out]
Time = 0.08 (sec) , antiderivative size = 35, normalized size of antiderivative = 1.06 \[ \int \frac {(1+x)^2}{x^2 \sqrt {1-x^2}} \, dx=\mathrm {asin}\left (x\right )+2\,\ln \left (\sqrt {\frac {1}{x^2}-1}-\sqrt {\frac {1}{x^2}}\right )-\frac {\sqrt {1-x^2}}{x} \]
[In]
[Out]