3.78.82 \(\int \frac {-2+e^{27+x} (x-x^2)}{9 x^3} \, dx\)

Optimal. Leaf size=21 \[ \frac {-e^{27+x}+\frac {1}{x}-x}{9 x} \]

________________________________________________________________________________________

Rubi [A]  time = 0.04, antiderivative size = 20, normalized size of antiderivative = 0.95, number of steps used = 4, number of rules used = 3, integrand size = 22, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.136, Rules used = {12, 14, 2197} \begin {gather*} \frac {1}{9 x^2}-\frac {e^{x+27}}{9 x} \end {gather*}

Antiderivative was successfully verified.

[In]

Int[(-2 + E^(27 + x)*(x - x^2))/(9*x^3),x]

[Out]

1/(9*x^2) - E^(27 + x)/(9*x)

Rule 12

Int[(a_)*(u_), x_Symbol] :> Dist[a, Int[u, x], x] /; FreeQ[a, x] &&  !MatchQ[u, (b_)*(v_) /; FreeQ[b, x]]

Rule 14

Int[(u_)*((c_.)*(x_))^(m_.), x_Symbol] :> Int[ExpandIntegrand[(c*x)^m*u, x], x] /; FreeQ[{c, m}, x] && SumQ[u]
&&  !LinearQ[u, x] &&  !MatchQ[u, (a_) + (b_.)*(v_) /; FreeQ[{a, b}, x] && InverseFunctionQ[v]]

Rule 2197

Int[(F_)^((c_.)*(v_))*(u_)^(m_.)*(w_), x_Symbol] :> With[{b = Coefficient[v, x, 1], d = Coefficient[u, x, 0],
e = Coefficient[u, x, 1], f = Coefficient[w, x, 0], g = Coefficient[w, x, 1]}, Simp[(g*u^(m + 1)*F^(c*v))/(b*c
*e*Log[F]), x] /; EqQ[e*g*(m + 1) - b*c*(e*f - d*g)*Log[F], 0]] /; FreeQ[{F, c, m}, x] && LinearQ[{u, v, w}, x
]

Rubi steps

\begin {gather*} \begin {aligned} \text {integral} &=\frac {1}{9} \int \frac {-2+e^{27+x} \left (x-x^2\right )}{x^3} \, dx\\ &=\frac {1}{9} \int \left (-\frac {2}{x^3}-\frac {e^{27+x} (-1+x)}{x^2}\right ) \, dx\\ &=\frac {1}{9 x^2}-\frac {1}{9} \int \frac {e^{27+x} (-1+x)}{x^2} \, dx\\ &=\frac {1}{9 x^2}-\frac {e^{27+x}}{9 x}\\ \end {aligned} \end {gather*}

________________________________________________________________________________________

Mathematica [A]  time = 0.02, size = 18, normalized size = 0.86 \begin {gather*} \frac {1}{9} \left (\frac {1}{x^2}-\frac {e^{27+x}}{x}\right ) \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[(-2 + E^(27 + x)*(x - x^2))/(9*x^3),x]

[Out]

(x^(-2) - E^(27 + x)/x)/9

________________________________________________________________________________________

fricas [A]  time = 1.07, size = 13, normalized size = 0.62 \begin {gather*} -\frac {x e^{\left (x + 27\right )} - 1}{9 \, x^{2}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/9*((-x^2+x)*exp(x+27)-2)/x^3,x, algorithm="fricas")

[Out]

-1/9*(x*e^(x + 27) - 1)/x^2

________________________________________________________________________________________

giac [A]  time = 0.13, size = 13, normalized size = 0.62 \begin {gather*} -\frac {x e^{\left (x + 27\right )} - 1}{9 \, x^{2}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/9*((-x^2+x)*exp(x+27)-2)/x^3,x, algorithm="giac")

[Out]

-1/9*(x*e^(x + 27) - 1)/x^2

________________________________________________________________________________________

maple [A]  time = 0.04, size = 14, normalized size = 0.67

method	result	size
norman	\(\frac {\frac {1}{9}-\frac {{\mathrm e}^{x +27} x}{9}}{x^{2}}\)	\(14\)
derivativedivides	\(\frac {1}{9 x^{2}}-\frac {{\mathrm e}^{x +27}}{9 x}\)	\(16\)
default	\(\frac {1}{9 x^{2}}-\frac {{\mathrm e}^{x +27}}{9 x}\)	\(16\)
risch	\(\frac {1}{9 x^{2}}-\frac {{\mathrm e}^{x +27}}{9 x}\)	\(16\)

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(1/9*((-x^2+x)*exp(x+27)-2)/x^3,x,method=_RETURNVERBOSE)

[Out]

(1/9-1/9*exp(x+27)*x)/x^2

________________________________________________________________________________________

maxima [C]  time = 0.38, size = 21, normalized size = 1.00 \begin {gather*} -\frac {1}{9} \, {\rm Ei}\relax (x) e^{27} + \frac {1}{9} \, e^{27} \Gamma \left (-1, -x\right ) + \frac {1}{9 \, x^{2}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/9*((-x^2+x)*exp(x+27)-2)/x^3,x, algorithm="maxima")

[Out]

-1/9*Ei(x)*e^27 + 1/9*e^27*gamma(-1, -x) + 1/9/x^2

________________________________________________________________________________________

mupad [B]  time = 0.07, size = 13, normalized size = 0.62 \begin {gather*} -\frac {x\,{\mathrm {e}}^{x+27}-1}{9\,x^2} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(((exp(x + 27)*(x - x^2))/9 - 2/9)/x^3,x)

[Out]

-(x*exp(x + 27) - 1)/(9*x^2)

________________________________________________________________________________________

sympy [A]  time = 0.10, size = 14, normalized size = 0.67 \begin {gather*} - \frac {e^{x + 27}}{9 x} + \frac {1}{9 x^{2}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/9*((-x**2+x)*exp(x+27)-2)/x**3,x)

[Out]

-exp(x + 27)/(9*x) + 1/(9*x**2)

________________________________________________________________________________________