3.3.82 \(\int \frac {3 x^2+2 x^3}{\sqrt {-3+2 x+x^2} (-3+x+2 x^2)} \, dx\) [282]

Optimal. Leaf size=36 \[ \sqrt {-3+2 x+x^2}+\frac {\sqrt {-3+2 x+x^2}}{2 (1-x)} \]

[Out]

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

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Rubi [A]
time = 0.08, antiderivative size = 36, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, integrand size = 34, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.118, Rules used = {1607, 1600, 1652, 664} \begin {gather*} \frac {\sqrt {x^2+2 x-3}}{2 (1-x)}+\sqrt {x^2+2 x-3} \end {gather*}

Antiderivative was successfully verified.

[In]

Int[(3*x^2 + 2*x^3)/(Sqrt[-3 + 2*x + x^2]*(-3 + x + 2*x^2)),x]

[Out]

Sqrt[-3 + 2*x + x^2] + Sqrt[-3 + 2*x + x^2]/(2*(1 - x))

Rule 664

Int[((d_.) + (e_.)*(x_))^(m_)*((a_.) + (b_.)*(x_) + (c_.)*(x_)^2)^(p_), x_Symbol] :> Simp[e*(d + e*x)^m*((a +
b*x + c*x^2)^(p + 1)/((p + 1)*(2*c*d - b*e))), x] /; FreeQ[{a, b, c, d, e, m, p}, x] && NeQ[b^2 - 4*a*c, 0] &&
EqQ[c*d^2 - b*d*e + a*e^2, 0] &&  !IntegerQ[p] && EqQ[m + 2*p + 2, 0]

Rule 1600

Int[(u_.)*(Px_)^(p_.)*(Qx_)^(q_.), x_Symbol] :> Int[u*PolynomialQuotient[Px, Qx, x]^p*Qx^(p + q), x] /; FreeQ[
q, x] && PolyQ[Px, x] && PolyQ[Qx, x] && EqQ[PolynomialRemainder[Px, Qx, x], 0] && IntegerQ[p] && LtQ[p*q, 0]

Rule 1607

Int[(u_.)*((a_.)*(x_)^(p_.) + (b_.)*(x_)^(q_.))^(n_.), x_Symbol] :> Int[u*x^(n*p)*(a + b*x^(q - p))^n, x] /; F
reeQ[{a, b, p, q}, x] && IntegerQ[n] && PosQ[q - p]

Rule 1652

Int[(Pq_)*((d_.) + (e_.)*(x_))^(m_.)*((a_.) + (b_.)*(x_) + (c_.)*(x_)^2)^(p_), x_Symbol] :> With[{q = Expon[Pq
, x], f = Coeff[Pq, x, Expon[Pq, x]]}, Simp[f*(d + e*x)^(m + q - 1)*((a + b*x + c*x^2)^(p + 1)/(c*e^(q - 1)*(m
+ q + 2*p + 1))), x] + Dist[1/(c*e^q*(m + q + 2*p + 1)), Int[(d + e*x)^m*(a + b*x + c*x^2)^p*ExpandToSum[c*e^
q*(m + q + 2*p + 1)*Pq - c*f*(m + q + 2*p + 1)*(d + e*x)^q + e*f*(m + p + q)*(d + e*x)^(q - 2)*(b*d - 2*a*e +
(2*c*d - b*e)*x), x], x], x] /; NeQ[m + q + 2*p + 1, 0]] /; FreeQ[{a, b, c, d, e, m, p}, x] && PolyQ[Pq, x] &&
NeQ[b^2 - 4*a*c, 0] && EqQ[c*d^2 - b*d*e + a*e^2, 0]

Rubi steps

\begin {align*} \int \frac {3 x^2+2 x^3}{\sqrt {-3+2 x+x^2} \left (-3+x+2 x^2\right )} \, dx &=\int \frac {x^2 (3+2 x)}{\sqrt {-3+2 x+x^2} \left (-3+x+2 x^2\right )} \, dx\\ &=\int \frac {x^2}{(-1+x) \sqrt {-3+2 x+x^2}} \, dx\\ &=\sqrt {-3+2 x+x^2}+\int \frac {1}{(-1+x) \sqrt {-3+2 x+x^2}} \, dx\\ &=\sqrt {-3+2 x+x^2}+\frac {\sqrt {-3+2 x+x^2}}{2 (1-x)}\\ \end {align*}

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Mathematica [A]
time = 0.08, size = 26, normalized size = 0.72 \begin {gather*} \frac {(-3+2 x) \sqrt {-3+2 x+x^2}}{2 (-1+x)} \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[(3*x^2 + 2*x^3)/(Sqrt[-3 + 2*x + x^2]*(-3 + x + 2*x^2)),x]

[Out]

((-3 + 2*x)*Sqrt[-3 + 2*x + x^2])/(2*(-1 + x))

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Maple [A]
time = 0.11, size = 31, normalized size = 0.86

method	result	size
gosper	\(\frac {\left (2 x -3\right ) \left (3+x \right )}{2 \sqrt {x^{2}+2 x -3}}\)	\(21\)
trager	\(\frac {\left (2 x -3\right ) \sqrt {x^{2}+2 x -3}}{2 x -2}\)	\(23\)
risch	\(\frac {2 x^{2}+3 x -9}{2 \sqrt {x^{2}+2 x -3}}\)	\(23\)
default	\(\sqrt {x^{2}+2 x -3}-\frac {\sqrt {\left (-1+x \right )^{2}-4+4 x}}{2 \left (-1+x \right )}\)	\(31\)

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

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

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Maxima [A]
time = 3.01, size = 28, normalized size = 0.78 \begin {gather*} \sqrt {x^{2} + 2 \, x - 3} - \frac {\sqrt {x^{2} + 2 \, x - 3}}{2 \, {\left (x - 1\right )}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

sqrt(x^2 + 2*x - 3) - 1/2*sqrt(x^2 + 2*x - 3)/(x - 1)

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Fricas [A]
time = 0.52, size = 22, normalized size = 0.61 \begin {gather*} \frac {\sqrt {x^{2} + 2 \, x - 3} {\left (2 \, x - 3\right )}}{2 \, {\left (x - 1\right )}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

1/2*sqrt(x^2 + 2*x - 3)*(2*x - 3)/(x - 1)

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Sympy [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \frac {x^{2}}{\sqrt {\left (x - 1\right ) \left (x + 3\right )} \left (x - 1\right )}\, dx \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

Integral(x**2/(sqrt((x - 1)*(x + 3))*(x - 1)), x)

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Giac [A]
time = 0.83, size = 30, normalized size = 0.83 \begin {gather*} \sqrt {x^{2} + 2 \, x - 3} + \frac {2}{x - \sqrt {x^{2} + 2 \, x - 3} - 1} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

sqrt(x^2 + 2*x - 3) + 2/(x - sqrt(x^2 + 2*x - 3) - 1)

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Mupad [B]
time = 0.27, size = 19, normalized size = 0.53 \begin {gather*} \frac {\left (x-\frac {3}{2}\right )\,\sqrt {x^2+2\,x-3}}{x-1} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((3*x^2 + 2*x^3)/((x + 2*x^2 - 3)*(2*x + x^2 - 3)^(1/2)),x)

[Out]

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

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