3.8.25 \(\int \frac {(-x)^m}{\sqrt {2-3 x}} \, dx\) [725]

Optimal. Leaf size=34 \[ -\frac {(-x)^{1+m} \, _2F_1\left (\frac {1}{2},1+m;2+m;\frac {3 x}{2}\right )}{\sqrt {2} (1+m)} \]

[Out]

-1/2*(-x)^(1+m)*hypergeom([1/2, 1+m],[2+m],3/2*x)/(1+m)*2^(1/2)

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Rubi [A]
time = 0.00, antiderivative size = 34, normalized size of antiderivative = 1.00, number of steps used = 1, number of rules used = 1, integrand size = 15, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.067, Rules used = {66} \begin {gather*} -\frac {(-x)^{m+1} \, _2F_1\left (\frac {1}{2},m+1;m+2;\frac {3 x}{2}\right )}{\sqrt {2} (m+1)} \end {gather*}

Antiderivative was successfully verified.

[In]

Int[(-x)^m/Sqrt[2 - 3*x],x]

[Out]

-(((-x)^(1 + m)*Hypergeometric2F1[1/2, 1 + m, 2 + m, (3*x)/2])/(Sqrt[2]*(1 + m)))

Rule 66

Int[((b_.)*(x_))^(m_)*((c_) + (d_.)*(x_))^(n_), x_Symbol] :> Simp[c^n*((b*x)^(m + 1)/(b*(m + 1)))*Hypergeometr
ic2F1[-n, m + 1, m + 2, (-d)*(x/c)], x] /; FreeQ[{b, c, d, m, n}, x] &&  !IntegerQ[m] && (IntegerQ[n] || (GtQ[
c, 0] &&  !(EqQ[n, -2^(-1)] && EqQ[c^2 - d^2, 0] && GtQ[-d/(b*c), 0])))

Rubi steps

\begin {align*} \int \frac {(-x)^m}{\sqrt {2-3 x}} \, dx &=-\frac {(-x)^{1+m} \, _2F_1\left (\frac {1}{2},1+m;2+m;\frac {3 x}{2}\right )}{\sqrt {2} (1+m)}\\ \end {align*}

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Mathematica [A]
time = 0.01, size = 32, normalized size = 0.94 \begin {gather*} \frac {(-x)^m x \, _2F_1\left (\frac {1}{2},1+m;2+m;\frac {3 x}{2}\right )}{\sqrt {2} (1+m)} \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[(-x)^m/Sqrt[2 - 3*x],x]

[Out]

((-x)^m*x*Hypergeometric2F1[1/2, 1 + m, 2 + m, (3*x)/2])/(Sqrt[2]*(1 + m))

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Maple [A]
time = 0.13, size = 30, normalized size = 0.88

method	result	size
meijerg	\(\frac {\sqrt {2}\, \left (-x \right )^{m} x \hypergeom \left (\left [\frac {1}{2}, 1+m \right ], \left [2+m \right ], \frac {3 x}{2}\right )}{2+2 m}\)	\(30\)

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

1/2*2^(1/2)*(-x)^m/(1+m)*x*hypergeom([1/2,1+m],[2+m],3/2*x)

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Maxima [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Failed to integrate} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

integrate((-x)^m/sqrt(-3*x + 2), x)

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Fricas [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {could not integrate} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

integral(-(-x)^m*sqrt(-3*x + 2)/(3*x - 2), x)

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Sympy [C] Result contains complex when optimal does not.
time = 0.59, size = 53, normalized size = 1.56 \begin {gather*} - \frac {2 \cdot 2^{m} \sqrt {3} \cdot 3^{- m} i \sqrt {x - \frac {2}{3}} e^{i \pi m} {{}_{2}F_{1}\left (\begin {matrix} \frac {1}{2}, - m \\ \frac {3}{2} \end {matrix}\middle | {\frac {3 \left (x - \frac {2}{3}\right ) e^{i \pi }}{2}} \right )}}{3} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

-2*2**m*sqrt(3)*I*sqrt(x - 2/3)*exp(I*pi*m)*hyper((1/2, -m), (3/2,), 3*(x - 2/3)*exp_polar(I*pi)/2)/(3*3**m)

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Giac [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {could not integrate} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

integrate((-x)^m/sqrt(-3*x + 2), x)

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Mupad [F]
time = 0.00, size = -1, normalized size = -0.03 \begin {gather*} \int \frac {{\left (-x\right )}^m}{\sqrt {2-3\,x}} \,d x \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((-x)^m/(2 - 3*x)^(1/2),x)

[Out]

int((-x)^m/(2 - 3*x)^(1/2), x)

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