3.66.28 \(\int \frac {e^x (e^{7-x} (-1-2 x)+e^4 (2+2 x+x^2))}{16+4 e^{6-2 x}+e^{3-x} (-16-8 x)+16 x+4 x^2} \, dx\)

Optimal. Leaf size=34 \[ -e^3+\frac {1}{4} e^4 \left (5+\frac {e^x x}{2-e^{3-x}+x}\right ) \]

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Rubi [F]  time = 2.20, antiderivative size = 0, normalized size of antiderivative = 0.00, number of steps used = 0, number of rules used = 0, integrand size = 0, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.000, Rules used = {} \begin {gather*} \int \frac {e^x \left (e^{7-x} (-1-2 x)+e^4 \left (2+2 x+x^2\right )\right )}{16+4 e^{6-2 x}+e^{3-x} (-16-8 x)+16 x+4 x^2} \, dx \end {gather*}

Verification is not applicable to the result.

[In]

Int[(E^x*(E^(7 - x)*(-1 - 2*x) + E^4*(2 + 2*x + x^2)))/(16 + 4*E^(6 - 2*x) + E^(3 - x)*(-16 - 8*x) + 16*x + 4*
x^2),x]

[Out]

E^(1 + 2*x)/8 - (E^(1 + 2*x)*(1 + 2*x))/8 - (3*Defer[Int][(E^(4 + 3*x)*x)/(-E^3 + 2*E^x + E^x*x)^2, x])/4 - De
fer[Int][(E^(4 + 3*x)*x^2)/(-E^3 + 2*E^x + E^x*x)^2, x]/4 + Defer[Int][E^(1 + 3*x)/(-E^3 + 2*E^x + E^x*x), x]/
2 + (5*Defer[Int][(E^(1 + 3*x)*x)/(-E^3 + 2*E^x + E^x*x), x])/4 + Defer[Int][(E^(1 + 3*x)*x^2)/(-E^3 + 2*E^x +
E^x*x), x]/2

Rubi steps

\begin {gather*} \begin {aligned} \text {integral} &=\int \frac {e^{3 x} \left (e^{7-x} (-1-2 x)+e^4 \left (2+2 x+x^2\right )\right )}{4 \left (e^3-2 e^x-e^x x\right )^2} \, dx\\ &=\frac {1}{4} \int \frac {e^{3 x} \left (e^{7-x} (-1-2 x)+e^4 \left (2+2 x+x^2\right )\right )}{\left (e^3-2 e^x-e^x x\right )^2} \, dx\\ &=\frac {1}{4} \int \left (-e^{1+2 x} (1+2 x)-\frac {e^{4+3 x} x (3+x)}{\left (e^3-2 e^x-e^x x\right )^2}-\frac {e^{1+3 x} \left (2+5 x+2 x^2\right )}{e^3-2 e^x-e^x x}\right ) \, dx\\ &=-\left (\frac {1}{4} \int e^{1+2 x} (1+2 x) \, dx\right )-\frac {1}{4} \int \frac {e^{4+3 x} x (3+x)}{\left (e^3-2 e^x-e^x x\right )^2} \, dx-\frac {1}{4} \int \frac {e^{1+3 x} \left (2+5 x+2 x^2\right )}{e^3-2 e^x-e^x x} \, dx\\ &=-\frac {1}{8} e^{1+2 x} (1+2 x)+\frac {1}{4} \int e^{1+2 x} \, dx-\frac {1}{4} \int \left (\frac {3 e^{4+3 x} x}{\left (-e^3+2 e^x+e^x x\right )^2}+\frac {e^{4+3 x} x^2}{\left (-e^3+2 e^x+e^x x\right )^2}\right ) \, dx-\frac {1}{4} \int \left (-\frac {2 e^{1+3 x}}{-e^3+2 e^x+e^x x}-\frac {5 e^{1+3 x} x}{-e^3+2 e^x+e^x x}-\frac {2 e^{1+3 x} x^2}{-e^3+2 e^x+e^x x}\right ) \, dx\\ &=\frac {1}{8} e^{1+2 x}-\frac {1}{8} e^{1+2 x} (1+2 x)-\frac {1}{4} \int \frac {e^{4+3 x} x^2}{\left (-e^3+2 e^x+e^x x\right )^2} \, dx+\frac {1}{2} \int \frac {e^{1+3 x}}{-e^3+2 e^x+e^x x} \, dx+\frac {1}{2} \int \frac {e^{1+3 x} x^2}{-e^3+2 e^x+e^x x} \, dx-\frac {3}{4} \int \frac {e^{4+3 x} x}{\left (-e^3+2 e^x+e^x x\right )^2} \, dx+\frac {5}{4} \int \frac {e^{1+3 x} x}{-e^3+2 e^x+e^x x} \, dx\\ \end {aligned} \end {gather*}

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Mathematica [A]  time = 0.53, size = 27, normalized size = 0.79 \begin {gather*} \frac {e^{4+2 x} x}{4 \left (-e^3+e^x (2+x)\right )} \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[(E^x*(E^(7 - x)*(-1 - 2*x) + E^4*(2 + 2*x + x^2)))/(16 + 4*E^(6 - 2*x) + E^(3 - x)*(-16 - 8*x) + 16*
x + 4*x^2),x]

[Out]

(E^(4 + 2*x)*x)/(4*(-E^3 + E^x*(2 + x)))

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fricas [A]  time = 1.40, size = 22, normalized size = 0.65 \begin {gather*} \frac {x e^{\left (2 \, x + 4\right )}}{4 \, {\left ({\left (x + 2\right )} e^{x} - e^{3}\right )}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(((-2*x-1)*exp(4)*exp(3-x)+(x^2+2*x+2)*exp(4))*exp(x)/(4*exp(3-x)^2+(-8*x-16)*exp(3-x)+4*x^2+16*x+16)
,x, algorithm="fricas")

[Out]

1/4*x*e^(2*x + 4)/((x + 2)*e^x - e^3)

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giac [A]  time = 0.22, size = 28, normalized size = 0.82 \begin {gather*} \frac {x e^{4}}{4 \, {\left (x e^{\left (-x\right )} + 2 \, e^{\left (-x\right )} - e^{\left (-2 \, x + 3\right )}\right )}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(((-2*x-1)*exp(4)*exp(3-x)+(x^2+2*x+2)*exp(4))*exp(x)/(4*exp(3-x)^2+(-8*x-16)*exp(3-x)+4*x^2+16*x+16)
,x, algorithm="giac")

[Out]

1/4*x*e^4/(x*e^(-x) + 2*e^(-x) - e^(-2*x + 3))

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maple [A]  time = 0.20, size = 24, normalized size = 0.71

method	result	size
norman	\(-\frac {x \,{\mathrm e}^{4} {\mathrm e}^{2 x}}{4 \left (-{\mathrm e}^{x} x +{\mathrm e}^{3}-2 \,{\mathrm e}^{x}\right )}\)	\(24\)
risch	\(\frac {x \,{\mathrm e}^{7}}{4 x^{2}+16 x +16}+\frac {x \,{\mathrm e}^{4+x}}{4 x +8}-\frac {{\mathrm e}^{10} x}{4 \left (x^{2}+4 x +4\right ) \left (-{\mathrm e}^{x} x +{\mathrm e}^{3}-2 \,{\mathrm e}^{x}\right )}\)	\(58\)

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(((-2*x-1)*exp(4)*exp(3-x)+(x^2+2*x+2)*exp(4))*exp(x)/(4*exp(3-x)^2+(-8*x-16)*exp(3-x)+4*x^2+16*x+16),x,met
hod=_RETURNVERBOSE)

[Out]

-1/4*x*exp(4)*exp(x)^2/(-exp(x)*x+exp(3)-2*exp(x))

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maxima [A]  time = 0.49, size = 22, normalized size = 0.65 \begin {gather*} \frac {x e^{\left (2 \, x + 4\right )}}{4 \, {\left ({\left (x + 2\right )} e^{x} - e^{3}\right )}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(((-2*x-1)*exp(4)*exp(3-x)+(x^2+2*x+2)*exp(4))*exp(x)/(4*exp(3-x)^2+(-8*x-16)*exp(3-x)+4*x^2+16*x+16)
,x, algorithm="maxima")

[Out]

1/4*x*e^(2*x + 4)/((x + 2)*e^x - e^3)

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mupad [B]  time = 4.49, size = 53, normalized size = 1.56 \begin {gather*} \frac {x\,\left (2\,{\mathrm {e}}^{x+4}\,{\mathrm {e}}^x-{\mathrm {e}}^{x+4}\,{\mathrm {e}}^3+{\mathrm {e}}^7\,{\mathrm {e}}^x+x\,{\mathrm {e}}^{x+4}\,{\mathrm {e}}^x\right )}{4\,\left (x+2\right )\,\left (2\,{\mathrm {e}}^x-{\mathrm {e}}^3+x\,{\mathrm {e}}^x\right )} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((exp(x)*(exp(4)*(2*x + x^2 + 2) - exp(4)*exp(3 - x)*(2*x + 1)))/(16*x + 4*exp(6 - 2*x) - exp(3 - x)*(8*x +
16) + 4*x^2 + 16),x)

[Out]

(x*(2*exp(x + 4)*exp(x) - exp(x + 4)*exp(3) + exp(7)*exp(x) + x*exp(x + 4)*exp(x)))/(4*(x + 2)*(2*exp(x) - exp
(3) + x*exp(x)))

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sympy [B]  time = 0.33, size = 71, normalized size = 2.09 \begin {gather*} \frac {x e^{10}}{- 4 x^{2} e^{3} - 16 x e^{3} + \left (4 x^{3} + 24 x^{2} + 48 x + 32\right ) e^{x} - 16 e^{3}} + \frac {x e^{7}}{4 x^{2} + 16 x + 16} + \frac {x e^{4} e^{x}}{4 x + 8} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(((-2*x-1)*exp(4)*exp(3-x)+(x**2+2*x+2)*exp(4))*exp(x)/(4*exp(3-x)**2+(-8*x-16)*exp(3-x)+4*x**2+16*x+
16),x)

[Out]

x*exp(10)/(-4*x**2*exp(3) - 16*x*exp(3) + (4*x**3 + 24*x**2 + 48*x + 32)*exp(x) - 16*exp(3)) + x*exp(7)/(4*x**
2 + 16*x + 16) + x*exp(4)*exp(x)/(4*x + 8)

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