Optimal. Leaf size=61 \[ -\frac {2 (1-a x)}{a \sqrt {c-a^2 c x^2}}-\frac {\text {ArcTan}\left (\frac {a \sqrt {c} x}{\sqrt {c-a^2 c x^2}}\right )}{a \sqrt {c}} \]
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Rubi [A]
time = 0.05, antiderivative size = 61, normalized size of antiderivative = 1.00, number of steps
used = 4, number of rules used = 4, integrand size = 24, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.167, Rules used = {6277, 667, 223,
209} \begin {gather*} -\frac {\text {ArcTan}\left (\frac {a \sqrt {c} x}{\sqrt {c-a^2 c x^2}}\right )}{a \sqrt {c}}-\frac {2 (1-a x)}{a \sqrt {c-a^2 c x^2}} \end {gather*}
Antiderivative was successfully verified.
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Rule 209
Rule 223
Rule 667
Rule 6277
Rubi steps
\begin {align*} \int \frac {e^{-2 \tanh ^{-1}(a x)}}{\sqrt {c-a^2 c x^2}} \, dx &=c \int \frac {(1-a x)^2}{\left (c-a^2 c x^2\right )^{3/2}} \, dx\\ &=-\frac {2 (1-a x)}{a \sqrt {c-a^2 c x^2}}-\int \frac {1}{\sqrt {c-a^2 c x^2}} \, dx\\ &=-\frac {2 (1-a x)}{a \sqrt {c-a^2 c x^2}}-\text {Subst}\left (\int \frac {1}{1+a^2 c x^2} \, dx,x,\frac {x}{\sqrt {c-a^2 c x^2}}\right )\\ &=-\frac {2 (1-a x)}{a \sqrt {c-a^2 c x^2}}-\frac {\tan ^{-1}\left (\frac {a \sqrt {c} x}{\sqrt {c-a^2 c x^2}}\right )}{a \sqrt {c}}\\ \end {align*}
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Mathematica [A]
time = 0.04, size = 100, normalized size = 1.64 \begin {gather*} \frac {2 \sqrt {1-a^2 x^2} \left ((-1+a x) \sqrt {1+a x}+\sqrt {1-a x} (1+a x) \text {ArcSin}\left (\frac {\sqrt {1-a x}}{\sqrt {2}}\right )\right )}{a \sqrt {1-a x} (1+a x) \sqrt {c-a^2 c x^2}} \end {gather*}
Warning: Unable to verify antiderivative.
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Maple [A]
time = 0.06, size = 74, normalized size = 1.21
method | result | size |
default | \(-\frac {\arctan \left (\frac {\sqrt {c \,a^{2}}\, x}{\sqrt {-a^{2} c \,x^{2}+c}}\right )}{\sqrt {c \,a^{2}}}-\frac {2 \sqrt {-c \,a^{2} \left (x +\frac {1}{a}\right )^{2}+2 a c \left (x +\frac {1}{a}\right )}}{a^{2} c \left (x +\frac {1}{a}\right )}\) | \(74\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.45, size = 40, normalized size = 0.66 \begin {gather*} -\frac {2 \, \sqrt {-a^{2} c x^{2} + c}}{a^{2} c x + a c} - \frac {\arcsin \left (a x\right )}{a \sqrt {c}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.35, size = 150, normalized size = 2.46 \begin {gather*} \left [-\frac {{\left (a x + 1\right )} \sqrt {-c} \log \left (2 \, a^{2} c x^{2} + 2 \, \sqrt {-a^{2} c x^{2} + c} a \sqrt {-c} x - c\right ) + 4 \, \sqrt {-a^{2} c x^{2} + c}}{2 \, {\left (a^{2} c x + a c\right )}}, \frac {{\left (a x + 1\right )} \sqrt {c} \arctan \left (\frac {\sqrt {-a^{2} c x^{2} + c} a \sqrt {c} x}{a^{2} c x^{2} - c}\right ) - 2 \, \sqrt {-a^{2} c x^{2} + c}}{a^{2} c x + a c}\right ] \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} - \int \frac {a x}{a x \sqrt {- a^{2} c x^{2} + c} + \sqrt {- a^{2} c x^{2} + c}}\, dx - \int \left (- \frac {1}{a x \sqrt {- a^{2} c x^{2} + c} + \sqrt {- a^{2} c x^{2} + c}}\right )\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [B] Leaf count of result is larger than twice the leaf count of optimal. 107 vs.
\(2 (52) = 104\).
time = 0.44, size = 107, normalized size = 1.75 \begin {gather*} -\frac {2 \, {\left (\frac {{\left (c \arctan \left (\frac {\sqrt {-c}}{\sqrt {c}}\right ) - \sqrt {-c} \sqrt {c}\right )} \mathrm {sgn}\left (\frac {1}{a x + 1}\right ) \mathrm {sgn}\left (a\right )}{c^{\frac {3}{2}}} - \frac {\frac {\arctan \left (\frac {\sqrt {-c + \frac {2 \, c}{a x + 1}}}{\sqrt {c}}\right )}{\sqrt {c}} - \frac {\sqrt {-c + \frac {2 \, c}{a x + 1}}}{c}}{\mathrm {sgn}\left (\frac {1}{a x + 1}\right ) \mathrm {sgn}\left (a\right )}\right )}}{{\left | a \right |}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [F]
time = 0.00, size = -1, normalized size = -0.02 \begin {gather*} -\int \frac {a^2\,x^2-1}{\sqrt {c-a^2\,c\,x^2}\,{\left (a\,x+1\right )}^2} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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