3.2.98 \(\int \frac {1+x}{(1-x)^2 \sqrt {1+x^2}} \, dx\) [198]

Optimal. Leaf size=17 \[ \frac {\sqrt {1+x^2}}{1-x} \]

[Out]

(x^2+1)^(1/2)/(1-x)

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Rubi [A]
time = 0.01, antiderivative size = 17, normalized size of antiderivative = 1.00, number of steps used = 1, number of rules used = 1, integrand size = 20, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.050, Rules used = {817} \begin {gather*} \frac {\sqrt {x^2+1}}{1-x} \end {gather*}

Antiderivative was successfully verified.

[In]

Int[(1 + x)/((1 - x)^2*Sqrt[1 + x^2]),x]

[Out]

Sqrt[1 + x^2]/(1 - x)

Rule 817

Int[((d_.) + (e_.)*(x_))^(m_)*((f_.) + (g_.)*(x_))*((a_) + (c_.)*(x_)^2)^(p_.), x_Symbol] :> Simp[(-(e*f - d*g
))*(d + e*x)^(m + 1)*((a + c*x^2)^(p + 1)/(2*(p + 1)*(c*d^2 + a*e^2))), x] /; FreeQ[{a, c, d, e, f, g, m, p},
x] && NeQ[c*d^2 + a*e^2, 0] && EqQ[Simplify[m + 2*p + 3], 0] && EqQ[c*d*f + a*e*g, 0]

Rubi steps

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

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Mathematica [A]
time = 0.12, size = 17, normalized size = 1.00 \begin {gather*} \frac {\sqrt {1+x^2}}{1-x} \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[(1 + x)/((1 - x)^2*Sqrt[1 + x^2]),x]

[Out]

Sqrt[1 + x^2]/(1 - x)

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Maple [A]
time = 0.04, size = 19, normalized size = 1.12

method	result	size
gosper	\(-\frac {\sqrt {x^{2}+1}}{-1+x}\)	\(15\)
trager	\(-\frac {\sqrt {x^{2}+1}}{-1+x}\)	\(15\)
risch	\(-\frac {\sqrt {x^{2}+1}}{-1+x}\)	\(15\)
default	\(-\frac {\sqrt {\left (-1+x \right )^{2}+2 x}}{-1+x}\)	\(19\)

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((1+x)/(1-x)^2/(x^2+1)^(1/2),x,method=_RETURNVERBOSE)

[Out]

-1/(-1+x)*((-1+x)^2+2*x)^(1/2)

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Maxima [A]
time = 2.68, size = 14, normalized size = 0.82 \begin {gather*} -\frac {\sqrt {x^{2} + 1}}{x - 1} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((1+x)/(1-x)^2/(x^2+1)^(1/2),x, algorithm="maxima")

[Out]

-sqrt(x^2 + 1)/(x - 1)

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Fricas [A]
time = 0.71, size = 17, normalized size = 1.00 \begin {gather*} -\frac {x + \sqrt {x^{2} + 1} - 1}{x - 1} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((1+x)/(1-x)^2/(x^2+1)^(1/2),x, algorithm="fricas")

[Out]

-(x + sqrt(x^2 + 1) - 1)/(x - 1)

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Sympy [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \frac {x + 1}{\left (x - 1\right )^{2} \sqrt {x^{2} + 1}}\, dx \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((1+x)/(1-x)**2/(x**2+1)**(1/2),x)

[Out]

Integral((x + 1)/((x - 1)**2*sqrt(x**2 + 1)), x)

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Giac [B] Leaf count of result is larger than twice the leaf count of optimal. 35 vs. \(2 (14) = 28\).
time = 0.73, size = 35, normalized size = 2.06 \begin {gather*} -\frac {\sqrt {\frac {2}{x - 1} + \frac {2}{{\left (x - 1\right )}^{2}} + 1}}{\mathrm {sgn}\left (\frac {1}{x - 1}\right )} + \mathrm {sgn}\left (\frac {1}{x - 1}\right ) \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((1+x)/(1-x)^2/(x^2+1)^(1/2),x, algorithm="giac")

[Out]

-sqrt(2/(x - 1) + 2/(x - 1)^2 + 1)/sgn(1/(x - 1)) + sgn(1/(x - 1))

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Mupad [B]
time = 0.15, size = 14, normalized size = 0.82 \begin {gather*} -\frac {\sqrt {x^2+1}}{x-1} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((x + 1)/((x^2 + 1)^(1/2)*(x - 1)^2),x)

[Out]

-(x^2 + 1)^(1/2)/(x - 1)

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