3.127 \(\int \frac{x^m (A+B x^3)}{a+b x^3} \, dx\)

Optimal. Leaf size=66 \[ \frac{x^{m+1} (A b-a B) \, _2F_1\left (1,\frac{m+1}{3};\frac{m+4}{3};-\frac{b x^3}{a}\right )}{a b (m+1)}+\frac{B x^{m+1}}{b (m+1)} \]

[Out]

(B*x^(1 + m))/(b*(1 + m)) + ((A*b - a*B)*x^(1 + m)*Hypergeometric2F1[1, (1 + m)/3, (4 + m)/3, -((b*x^3)/a)])/(
a*b*(1 + m))

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Rubi [A]  time = 0.0350864, antiderivative size = 66, normalized size of antiderivative = 1., number of steps used = 2, number of rules used = 2, integrand size = 20, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.1, Rules used = {459, 364} \[ \frac{x^{m+1} (A b-a B) \, _2F_1\left (1,\frac{m+1}{3};\frac{m+4}{3};-\frac{b x^3}{a}\right )}{a b (m+1)}+\frac{B x^{m+1}}{b (m+1)} \]

Antiderivative was successfully verified.

[In]

Int[(x^m*(A + B*x^3))/(a + b*x^3),x]

[Out]

(B*x^(1 + m))/(b*(1 + m)) + ((A*b - a*B)*x^(1 + m)*Hypergeometric2F1[1, (1 + m)/3, (4 + m)/3, -((b*x^3)/a)])/(
a*b*(1 + m))

Rule 459

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

Rule 364

Int[((c_.)*(x_))^(m_.)*((a_) + (b_.)*(x_)^(n_))^(p_), x_Symbol] :> Simp[(a^p*(c*x)^(m + 1)*Hypergeometric2F1[-
p, (m + 1)/n, (m + 1)/n + 1, -((b*x^n)/a)])/(c*(m + 1)), x] /; FreeQ[{a, b, c, m, n, p}, x] &&  !IGtQ[p, 0] &&
(ILtQ[p, 0] || GtQ[a, 0])

Rubi steps

\begin{align*} \int \frac{x^m \left (A+B x^3\right )}{a+b x^3} \, dx &=\frac{B x^{1+m}}{b (1+m)}-\frac{(-A b (1+m)+a B (1+m)) \int \frac{x^m}{a+b x^3} \, dx}{b (1+m)}\\ &=\frac{B x^{1+m}}{b (1+m)}+\frac{(A b-a B) x^{1+m} \, _2F_1\left (1,\frac{1+m}{3};\frac{4+m}{3};-\frac{b x^3}{a}\right )}{a b (1+m)}\\ \end{align*}

Mathematica [A]  time = 0.0587332, size = 55, normalized size = 0.83 \[ \frac{x^{m+1} \left ((A b-a B) \, _2F_1\left (1,\frac{m+1}{3};\frac{m+4}{3};-\frac{b x^3}{a}\right )+a B\right )}{a b (m+1)} \]

Antiderivative was successfully verified.

[In]

Integrate[(x^m*(A + B*x^3))/(a + b*x^3),x]

[Out]

(x^(1 + m)*(a*B + (A*b - a*B)*Hypergeometric2F1[1, (1 + m)/3, (4 + m)/3, -((b*x^3)/a)]))/(a*b*(1 + m))

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Maple [F]  time = 0.104, size = 0, normalized size = 0. \begin{align*} \int{\frac{{x}^{m} \left ( B{x}^{3}+A \right ) }{b{x}^{3}+a}}\, dx \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(x^m*(B*x^3+A)/(b*x^3+a),x)

[Out]

int(x^m*(B*x^3+A)/(b*x^3+a),x)

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Maxima [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{{\left (B x^{3} + A\right )} x^{m}}{b x^{3} + a}\,{d x} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^m*(B*x^3+A)/(b*x^3+a),x, algorithm="maxima")

[Out]

integrate((B*x^3 + A)*x^m/(b*x^3 + a), x)

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Fricas [F]  time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (\frac{{\left (B x^{3} + A\right )} x^{m}}{b x^{3} + a}, x\right ) \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^m*(B*x^3+A)/(b*x^3+a),x, algorithm="fricas")

[Out]

integral((B*x^3 + A)*x^m/(b*x^3 + a), x)

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Sympy [C]  time = 26.9433, size = 190, normalized size = 2.88 \begin{align*} \frac{A m x x^{m} \Phi \left (\frac{b x^{3} e^{i \pi }}{a}, 1, \frac{m}{3} + \frac{1}{3}\right ) \Gamma \left (\frac{m}{3} + \frac{1}{3}\right )}{9 a \Gamma \left (\frac{m}{3} + \frac{4}{3}\right )} + \frac{A x x^{m} \Phi \left (\frac{b x^{3} e^{i \pi }}{a}, 1, \frac{m}{3} + \frac{1}{3}\right ) \Gamma \left (\frac{m}{3} + \frac{1}{3}\right )}{9 a \Gamma \left (\frac{m}{3} + \frac{4}{3}\right )} + \frac{B m x^{4} x^{m} \Phi \left (\frac{b x^{3} e^{i \pi }}{a}, 1, \frac{m}{3} + \frac{4}{3}\right ) \Gamma \left (\frac{m}{3} + \frac{4}{3}\right )}{9 a \Gamma \left (\frac{m}{3} + \frac{7}{3}\right )} + \frac{4 B x^{4} x^{m} \Phi \left (\frac{b x^{3} e^{i \pi }}{a}, 1, \frac{m}{3} + \frac{4}{3}\right ) \Gamma \left (\frac{m}{3} + \frac{4}{3}\right )}{9 a \Gamma \left (\frac{m}{3} + \frac{7}{3}\right )} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x**m*(B*x**3+A)/(b*x**3+a),x)

[Out]

A*m*x*x**m*lerchphi(b*x**3*exp_polar(I*pi)/a, 1, m/3 + 1/3)*gamma(m/3 + 1/3)/(9*a*gamma(m/3 + 4/3)) + A*x*x**m
*lerchphi(b*x**3*exp_polar(I*pi)/a, 1, m/3 + 1/3)*gamma(m/3 + 1/3)/(9*a*gamma(m/3 + 4/3)) + B*m*x**4*x**m*lerc
hphi(b*x**3*exp_polar(I*pi)/a, 1, m/3 + 4/3)*gamma(m/3 + 4/3)/(9*a*gamma(m/3 + 7/3)) + 4*B*x**4*x**m*lerchphi(
b*x**3*exp_polar(I*pi)/a, 1, m/3 + 4/3)*gamma(m/3 + 4/3)/(9*a*gamma(m/3 + 7/3))

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Giac [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{{\left (B x^{3} + A\right )} x^{m}}{b x^{3} + a}\,{d x} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^m*(B*x^3+A)/(b*x^3+a),x, algorithm="giac")

[Out]

integrate((B*x^3 + A)*x^m/(b*x^3 + a), x)