3.4.50 \(\int \frac {(c x)^{-2+m}}{a+b x^2} \, dx\) [350]

Optimal. Leaf size=47 \[ -\frac {(c x)^{-1+m} \, _2F_1\left (1,\frac {1}{2} (-1+m);\frac {1+m}{2};-\frac {b x^2}{a}\right )}{a c (1-m)} \]

[Out]

-(c*x)^(-1+m)*hypergeom([1, -1/2+1/2*m],[1/2+1/2*m],-b*x^2/a)/a/c/(1-m)

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Rubi [A]
time = 0.01, antiderivative size = 47, normalized size of antiderivative = 1.00, number of steps used = 1, number of rules used = 1, integrand size = 17, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.059, Rules used = {371} \begin {gather*} -\frac {(c x)^{m-1} \, _2F_1\left (1,\frac {m-1}{2};\frac {m+1}{2};-\frac {b x^2}{a}\right )}{a c (1-m)} \end {gather*}

Antiderivative was successfully verified.

[In]

Int[(c*x)^(-2 + m)/(a + b*x^2),x]

[Out]

-(((c*x)^(-1 + m)*Hypergeometric2F1[1, (-1 + m)/2, (1 + m)/2, -((b*x^2)/a)])/(a*c*(1 - m)))

Rule 371

Int[((c_.)*(x_))^(m_.)*((a_) + (b_.)*(x_)^(n_))^(p_), x_Symbol] :> Simp[a^p*((c*x)^(m + 1)/(c*(m + 1)))*Hyperg
eometric2F1[-p, (m + 1)/n, (m + 1)/n + 1, (-b)*(x^n/a)], x] /; FreeQ[{a, b, c, m, n, p}, x] &&  !IGtQ[p, 0] &&
(ILtQ[p, 0] || GtQ[a, 0])

Rubi steps

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

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Mathematica [A]
time = 0.03, size = 44, normalized size = 0.94 \begin {gather*} \frac {x (c x)^{-2+m} \, _2F_1\left (1,\frac {1}{2} (-1+m);1+\frac {1}{2} (-1+m);-\frac {b x^2}{a}\right )}{a (-1+m)} \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[(c*x)^(-2 + m)/(a + b*x^2),x]

[Out]

(x*(c*x)^(-2 + m)*Hypergeometric2F1[1, (-1 + m)/2, 1 + (-1 + m)/2, -((b*x^2)/a)])/(a*(-1 + m))

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Maple [F]
time = 0.02, size = 0, normalized size = 0.00 \[\int \frac {\left (c x \right )^{-2+m}}{b \,x^{2}+a}\, dx\]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((c*x)^(-2+m)/(b*x^2+a),x)

[Out]

int((c*x)^(-2+m)/(b*x^2+a),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((c*x)^(-2+m)/(b*x^2+a),x, algorithm="maxima")

[Out]

integrate((c*x)^(m - 2)/(b*x^2 + a), 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((c*x)^(-2+m)/(b*x^2+a),x, algorithm="fricas")

[Out]

integral((c*x)^(m - 2)/(b*x^2 + a), x)

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Sympy [C] Result contains complex when optimal does not.
time = 4.96, size = 102, normalized size = 2.17 \begin {gather*} \frac {c^{m} m x^{m} \Phi \left (\frac {b x^{2} e^{i \pi }}{a}, 1, \frac {m}{2} - \frac {1}{2}\right ) \Gamma \left (\frac {m}{2} - \frac {1}{2}\right )}{4 a c^{2} x \Gamma \left (\frac {m}{2} + \frac {1}{2}\right )} - \frac {c^{m} x^{m} \Phi \left (\frac {b x^{2} e^{i \pi }}{a}, 1, \frac {m}{2} - \frac {1}{2}\right ) \Gamma \left (\frac {m}{2} - \frac {1}{2}\right )}{4 a c^{2} x \Gamma \left (\frac {m}{2} + \frac {1}{2}\right )} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((c*x)**(-2+m)/(b*x**2+a),x)

[Out]

c**m*m*x**m*lerchphi(b*x**2*exp_polar(I*pi)/a, 1, m/2 - 1/2)*gamma(m/2 - 1/2)/(4*a*c**2*x*gamma(m/2 + 1/2)) -
c**m*x**m*lerchphi(b*x**2*exp_polar(I*pi)/a, 1, m/2 - 1/2)*gamma(m/2 - 1/2)/(4*a*c**2*x*gamma(m/2 + 1/2))

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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((c*x)^(-2+m)/(b*x^2+a),x, algorithm="giac")

[Out]

integrate((c*x)^(m - 2)/(b*x^2 + a), x)

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Mupad [F]
time = 0.00, size = -1, normalized size = -0.02 \begin {gather*} \int \frac {{\left (c\,x\right )}^{m-2}}{b\,x^2+a} \,d x \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((c*x)^(m - 2)/(a + b*x^2),x)

[Out]

int((c*x)^(m - 2)/(a + b*x^2), x)

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