3.277 \(\int \frac{e^{-\tan ^{-1}(a x)}}{c+a^2 c x^2} \, dx\)

Optimal. Leaf size=16 \[ -\frac{e^{-\tan ^{-1}(a x)}}{a c} \]

[Out]

-(1/(a*c*E^ArcTan[a*x]))

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Rubi [A]  time = 0.0267153, antiderivative size = 16, normalized size of antiderivative = 1., number of steps used = 1, number of rules used = 1, integrand size = 21, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.048, Rules used = {5071} \[ -\frac{e^{-\tan ^{-1}(a x)}}{a c} \]

Antiderivative was successfully verified.

[In]

Int[1/(E^ArcTan[a*x]*(c + a^2*c*x^2)),x]

[Out]

-(1/(a*c*E^ArcTan[a*x]))

Rule 5071

Int[E^(ArcTan[(a_.)*(x_)]*(n_.))/((c_) + (d_.)*(x_)^2), x_Symbol] :> Simp[E^(n*ArcTan[a*x])/(a*c*n), x] /; Fre
eQ[{a, c, d, n}, x] && EqQ[d, a^2*c]

Rubi steps

\begin{align*} \int \frac{e^{-\tan ^{-1}(a x)}}{c+a^2 c x^2} \, dx &=-\frac{e^{-\tan ^{-1}(a x)}}{a c}\\ \end{align*}

Mathematica [C]  time = 0.0084977, size = 36, normalized size = 2.25 \[ -\frac{(1-i a x)^{-\frac{i}{2}} (1+i a x)^{\frac{i}{2}}}{a c} \]

Warning: Unable to verify antiderivative.

[In]

Integrate[1/(E^ArcTan[a*x]*(c + a^2*c*x^2)),x]

[Out]

-((1 + I*a*x)^(I/2)/(a*c*(1 - I*a*x)^(I/2)))

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Maple [A]  time = 0.038, size = 16, normalized size = 1. \begin{align*} -{\frac{1}{ac{{\rm e}^{\arctan \left ( ax \right ) }}}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(1/exp(arctan(a*x))/(a^2*c*x^2+c),x)

[Out]

-1/a/c/exp(arctan(a*x))

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Maxima [A]  time = 1.04651, size = 31, normalized size = 1.94 \begin{align*} -\frac{2 \, e^{\left (-\arctan \left (a x\right )\right )}}{a^{3} c x^{2} + a c} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/exp(arctan(a*x))/(a^2*c*x^2+c),x, algorithm="maxima")

[Out]

-2*e^(-arctan(a*x))/(a^3*c*x^2 + a*c)

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Fricas [A]  time = 1.96871, size = 34, normalized size = 2.12 \begin{align*} -\frac{e^{\left (-\arctan \left (a x\right )\right )}}{a c} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/exp(arctan(a*x))/(a^2*c*x^2+c),x, algorithm="fricas")

[Out]

-e^(-arctan(a*x))/(a*c)

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Sympy [F(-2)]  time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: TypeError} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/exp(atan(a*x))/(a**2*c*x**2+c),x)

[Out]

Exception raised: TypeError

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Giac [A]  time = 1.09327, size = 20, normalized size = 1.25 \begin{align*} -\frac{e^{\left (-\arctan \left (a x\right )\right )}}{a c} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/exp(arctan(a*x))/(a^2*c*x^2+c),x, algorithm="giac")

[Out]

-e^(-arctan(a*x))/(a*c)