Optimal. Leaf size=97 \[ -\frac {\left (\frac {1}{5}-\frac {3 i}{5}\right ) 2^{\frac {1}{2}+\frac {i}{2}} (1-i a x)^{\frac {3}{2}-\frac {i}{2}} \sqrt {c+a^2 c x^2} \, _2F_1\left (-\frac {1}{2}-\frac {i}{2},\frac {3}{2}-\frac {i}{2};\frac {5}{2}-\frac {i}{2};\frac {1}{2} (1-i a x)\right )}{a \sqrt {1+a^2 x^2}} \]
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Rubi [A]
time = 0.05, antiderivative size = 97, normalized size of antiderivative = 1.00, number of steps
used = 3, number of rules used = 3, integrand size = 23, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.130, Rules used = {5184, 5181, 71}
\begin {gather*} -\frac {\left (\frac {1}{5}-\frac {3 i}{5}\right ) 2^{\frac {1}{2}+\frac {i}{2}} (1-i a x)^{\frac {3}{2}-\frac {i}{2}} \sqrt {a^2 c x^2+c} \, _2F_1\left (-\frac {1}{2}-\frac {i}{2},\frac {3}{2}-\frac {i}{2};\frac {5}{2}-\frac {i}{2};\frac {1}{2} (1-i a x)\right )}{a \sqrt {a^2 x^2+1}} \end {gather*}
Antiderivative was successfully verified.
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Rule 71
Rule 5181
Rule 5184
Rubi steps
\begin {align*} \int e^{-\tan ^{-1}(a x)} \sqrt {c+a^2 c x^2} \, dx &=\frac {\sqrt {c+a^2 c x^2} \int e^{-\tan ^{-1}(a x)} \sqrt {1+a^2 x^2} \, dx}{\sqrt {1+a^2 x^2}}\\ &=\frac {\sqrt {c+a^2 c x^2} \int (1-i a x)^{\frac {1}{2}-\frac {i}{2}} (1+i a x)^{\frac {1}{2}+\frac {i}{2}} \, dx}{\sqrt {1+a^2 x^2}}\\ &=-\frac {\left (\frac {1}{5}-\frac {3 i}{5}\right ) 2^{\frac {1}{2}+\frac {i}{2}} (1-i a x)^{\frac {3}{2}-\frac {i}{2}} \sqrt {c+a^2 c x^2} \, _2F_1\left (-\frac {1}{2}-\frac {i}{2},\frac {3}{2}-\frac {i}{2};\frac {5}{2}-\frac {i}{2};\frac {1}{2} (1-i a x)\right )}{a \sqrt {1+a^2 x^2}}\\ \end {align*}
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Mathematica [A]
time = 0.02, size = 97, normalized size = 1.00 \begin {gather*} -\frac {\left (\frac {1}{5}-\frac {3 i}{5}\right ) 2^{\frac {1}{2}+\frac {i}{2}} (1-i a x)^{\frac {3}{2}-\frac {i}{2}} \sqrt {c+a^2 c x^2} \, _2F_1\left (-\frac {1}{2}-\frac {i}{2},\frac {3}{2}-\frac {i}{2};\frac {5}{2}-\frac {i}{2};\frac {1}{2} (1-i a x)\right )}{a \sqrt {1+a^2 x^2}} \end {gather*}
Antiderivative was successfully verified.
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Maple [F]
time = 0.01, size = 0, normalized size = 0.00 \[\int \sqrt {a^{2} c \,x^{2}+c}\, {\mathrm e}^{-\arctan \left (a x \right )}\, dx\]
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Failed to integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {could not integrate} \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 \sqrt {c \left (a^{2} x^{2} + 1\right )} e^{- \operatorname {atan}{\left (a x \right )}}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F(-2)]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Exception raised: TypeError} \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 = -0.01 \begin {gather*} \int {\mathrm {e}}^{-\mathrm {atan}\left (a\,x\right )}\,\sqrt {c\,a^2\,x^2+c} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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