Optimal. Leaf size=58 \[ \frac {2 \sqrt {c-a c x}}{a c}-\frac {2 \sqrt {2} \tanh ^{-1}\left (\frac {\sqrt {c-a c x}}{\sqrt {2} \sqrt {c}}\right )}{a \sqrt {c}} \]
[Out]
________________________________________________________________________________________
Rubi [A]
time = 0.04, antiderivative size = 58, normalized size of antiderivative = 1.00, number of steps
used = 5, number of rules used = 5, integrand size = 20, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.250, Rules used = {6265, 21, 52,
65, 212} \begin {gather*} \frac {2 \sqrt {c-a c x}}{a c}-\frac {2 \sqrt {2} \tanh ^{-1}\left (\frac {\sqrt {c-a c x}}{\sqrt {2} \sqrt {c}}\right )}{a \sqrt {c}} \end {gather*}
Antiderivative was successfully verified.
[In]
[Out]
Rule 21
Rule 52
Rule 65
Rule 212
Rule 6265
Rubi steps
\begin {align*} \int \frac {e^{-2 \tanh ^{-1}(a x)}}{\sqrt {c-a c x}} \, dx &=\int \frac {1-a x}{(1+a x) \sqrt {c-a c x}} \, dx\\ &=\frac {\int \frac {\sqrt {c-a c x}}{1+a x} \, dx}{c}\\ &=\frac {2 \sqrt {c-a c x}}{a c}+2 \int \frac {1}{(1+a x) \sqrt {c-a c x}} \, dx\\ &=\frac {2 \sqrt {c-a c x}}{a c}-\frac {4 \text {Subst}\left (\int \frac {1}{2-\frac {x^2}{c}} \, dx,x,\sqrt {c-a c x}\right )}{a c}\\ &=\frac {2 \sqrt {c-a c x}}{a c}-\frac {2 \sqrt {2} \tanh ^{-1}\left (\frac {\sqrt {c-a c x}}{\sqrt {2} \sqrt {c}}\right )}{a \sqrt {c}}\\ \end {align*}
________________________________________________________________________________________
Mathematica [A]
time = 0.02, size = 58, normalized size = 1.00 \begin {gather*} \frac {2 \sqrt {c-a c x}}{a c}-\frac {2 \sqrt {2} \tanh ^{-1}\left (\frac {\sqrt {c-a c x}}{\sqrt {2} \sqrt {c}}\right )}{a \sqrt {c}} \end {gather*}
Antiderivative was successfully verified.
[In]
[Out]
________________________________________________________________________________________
Maple [A]
time = 0.75, size = 45, normalized size = 0.78
method | result | size |
derivativedivides | \(\frac {2 \sqrt {-c x a +c}-2 \arctanh \left (\frac {\sqrt {-c x a +c}\, \sqrt {2}}{2 \sqrt {c}}\right ) \sqrt {2}\, \sqrt {c}}{a c}\) | \(45\) |
default | \(\frac {2 \sqrt {-c x a +c}-2 \arctanh \left (\frac {\sqrt {-c x a +c}\, \sqrt {2}}{2 \sqrt {c}}\right ) \sqrt {2}\, \sqrt {c}}{a c}\) | \(45\) |
risch | \(-\frac {2 \left (a x -1\right )}{a \sqrt {-c \left (a x -1\right )}}-\frac {2 \arctanh \left (\frac {\sqrt {-c x a +c}\, \sqrt {2}}{2 \sqrt {c}}\right ) \sqrt {2}}{a \sqrt {c}}\) | \(51\) |
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Maxima [A]
time = 0.46, size = 67, normalized size = 1.16 \begin {gather*} \frac {\sqrt {2} \sqrt {c} \log \left (-\frac {\sqrt {2} \sqrt {c} - \sqrt {-a c x + c}}{\sqrt {2} \sqrt {c} + \sqrt {-a c x + c}}\right ) + 2 \, \sqrt {-a c x + c}}{a c} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Fricas [A]
time = 0.34, size = 118, normalized size = 2.03 \begin {gather*} \left [\frac {\sqrt {2} \sqrt {c} \log \left (\frac {a x + \frac {2 \, \sqrt {2} \sqrt {-a c x + c}}{\sqrt {c}} - 3}{a x + 1}\right ) + 2 \, \sqrt {-a c x + c}}{a c}, -\frac {2 \, {\left (\sqrt {2} c \sqrt {-\frac {1}{c}} \arctan \left (\frac {\sqrt {2} \sqrt {-a c x + c} \sqrt {-\frac {1}{c}}}{a x - 1}\right ) - \sqrt {-a c x + c}\right )}}{a c}\right ] \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Sympy [A]
time = 19.14, size = 58, normalized size = 1.00 \begin {gather*} \frac {2 \sqrt {- a c x + c}}{a c} + \frac {2 \sqrt {2} \operatorname {atan}{\left (\frac {\sqrt {2}}{\sqrt {- \frac {1}{c}} \sqrt {- a c x + c}} \right )}}{a c \sqrt {- \frac {1}{c}}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Giac [A]
time = 0.42, size = 51, normalized size = 0.88 \begin {gather*} \frac {2 \, \sqrt {2} \arctan \left (\frac {\sqrt {2} \sqrt {-a c x + c}}{2 \, \sqrt {-c}}\right )}{a \sqrt {-c}} + \frac {2 \, \sqrt {-a c x + c}}{a c} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Mupad [B]
time = 0.07, size = 47, normalized size = 0.81 \begin {gather*} \frac {2\,\sqrt {c-a\,c\,x}}{a\,c}-\frac {2\,\sqrt {2}\,\mathrm {atanh}\left (\frac {\sqrt {2}\,\sqrt {c-a\,c\,x}}{2\,\sqrt {c}}\right )}{a\,\sqrt {c}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________