3.71 \(\int \frac {x^9 (A+B x^2)}{(a+b x^2)^2} \, dx\)

Optimal. Leaf size=126 \[ -\frac {a^4 (A b-a B)}{2 b^6 \left (a+b x^2\right )}-\frac {a^3 (4 A b-5 a B) \log \left (a+b x^2\right )}{2 b^6}+\frac {a^2 x^2 (3 A b-4 a B)}{2 b^5}-\frac {a x^4 (2 A b-3 a B)}{4 b^4}+\frac {x^6 (A b-2 a B)}{6 b^3}+\frac {B x^8}{8 b^2} \]

[Out]

1/2*a^2*(3*A*b-4*B*a)*x^2/b^5-1/4*a*(2*A*b-3*B*a)*x^4/b^4+1/6*(A*b-2*B*a)*x^6/b^3+1/8*B*x^8/b^2-1/2*a^4*(A*b-B
*a)/b^6/(b*x^2+a)-1/2*a^3*(4*A*b-5*B*a)*ln(b*x^2+a)/b^6

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Rubi [A]  time = 0.17, antiderivative size = 126, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, integrand size = 20, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.100, Rules used = {446, 77} \[ \frac {a^2 x^2 (3 A b-4 a B)}{2 b^5}-\frac {a^4 (A b-a B)}{2 b^6 \left (a+b x^2\right )}-\frac {a^3 (4 A b-5 a B) \log \left (a+b x^2\right )}{2 b^6}+\frac {x^6 (A b-2 a B)}{6 b^3}-\frac {a x^4 (2 A b-3 a B)}{4 b^4}+\frac {B x^8}{8 b^2} \]

Antiderivative was successfully verified.

[In]

Int[(x^9*(A + B*x^2))/(a + b*x^2)^2,x]

[Out]

(a^2*(3*A*b - 4*a*B)*x^2)/(2*b^5) - (a*(2*A*b - 3*a*B)*x^4)/(4*b^4) + ((A*b - 2*a*B)*x^6)/(6*b^3) + (B*x^8)/(8
*b^2) - (a^4*(A*b - a*B))/(2*b^6*(a + b*x^2)) - (a^3*(4*A*b - 5*a*B)*Log[a + b*x^2])/(2*b^6)

Rule 77

Int[((a_.) + (b_.)*(x_))*((c_) + (d_.)*(x_))^(n_.)*((e_.) + (f_.)*(x_))^(p_.), x_Symbol] :> Int[ExpandIntegran
d[(a + b*x)*(c + d*x)^n*(e + f*x)^p, x], x] /; FreeQ[{a, b, c, d, e, f, n}, x] && NeQ[b*c - a*d, 0] && ((ILtQ[
n, 0] && ILtQ[p, 0]) || EqQ[p, 1] || (IGtQ[p, 0] && ( !IntegerQ[n] || LeQ[9*p + 5*(n + 2), 0] || GeQ[n + p + 1
, 0] || (GeQ[n + p + 2, 0] && RationalQ[a, b, c, d, e, f]))))

Rule 446

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

Rubi steps

\begin {align*} \int \frac {x^9 \left (A+B x^2\right )}{\left (a+b x^2\right )^2} \, dx &=\frac {1}{2} \operatorname {Subst}\left (\int \frac {x^4 (A+B x)}{(a+b x)^2} \, dx,x,x^2\right )\\ &=\frac {1}{2} \operatorname {Subst}\left (\int \left (-\frac {a^2 (-3 A b+4 a B)}{b^5}+\frac {a (-2 A b+3 a B) x}{b^4}+\frac {(A b-2 a B) x^2}{b^3}+\frac {B x^3}{b^2}-\frac {a^4 (-A b+a B)}{b^5 (a+b x)^2}+\frac {a^3 (-4 A b+5 a B)}{b^5 (a+b x)}\right ) \, dx,x,x^2\right )\\ &=\frac {a^2 (3 A b-4 a B) x^2}{2 b^5}-\frac {a (2 A b-3 a B) x^4}{4 b^4}+\frac {(A b-2 a B) x^6}{6 b^3}+\frac {B x^8}{8 b^2}-\frac {a^4 (A b-a B)}{2 b^6 \left (a+b x^2\right )}-\frac {a^3 (4 A b-5 a B) \log \left (a+b x^2\right )}{2 b^6}\\ \end {align*}

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Mathematica [A]  time = 0.07, size = 113, normalized size = 0.90 \[ \frac {\frac {12 a^4 (a B-A b)}{a+b x^2}+12 a^3 (5 a B-4 A b) \log \left (a+b x^2\right )-12 a^2 b x^2 (4 a B-3 A b)+4 b^3 x^6 (A b-2 a B)+6 a b^2 x^4 (3 a B-2 A b)+3 b^4 B x^8}{24 b^6} \]

Antiderivative was successfully verified.

[In]

Integrate[(x^9*(A + B*x^2))/(a + b*x^2)^2,x]

[Out]

(-12*a^2*b*(-3*A*b + 4*a*B)*x^2 + 6*a*b^2*(-2*A*b + 3*a*B)*x^4 + 4*b^3*(A*b - 2*a*B)*x^6 + 3*b^4*B*x^8 + (12*a
^4*(-(A*b) + a*B))/(a + b*x^2) + 12*a^3*(-4*A*b + 5*a*B)*Log[a + b*x^2])/(24*b^6)

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fricas [A]  time = 0.46, size = 172, normalized size = 1.37 \[ \frac {3 \, B b^{5} x^{10} - {\left (5 \, B a b^{4} - 4 \, A b^{5}\right )} x^{8} + 2 \, {\left (5 \, B a^{2} b^{3} - 4 \, A a b^{4}\right )} x^{6} + 12 \, B a^{5} - 12 \, A a^{4} b - 6 \, {\left (5 \, B a^{3} b^{2} - 4 \, A a^{2} b^{3}\right )} x^{4} - 12 \, {\left (4 \, B a^{4} b - 3 \, A a^{3} b^{2}\right )} x^{2} + 12 \, {\left (5 \, B a^{5} - 4 \, A a^{4} b + {\left (5 \, B a^{4} b - 4 \, A a^{3} b^{2}\right )} x^{2}\right )} \log \left (b x^{2} + a\right )}{24 \, {\left (b^{7} x^{2} + a b^{6}\right )}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^9*(B*x^2+A)/(b*x^2+a)^2,x, algorithm="fricas")

[Out]

1/24*(3*B*b^5*x^10 - (5*B*a*b^4 - 4*A*b^5)*x^8 + 2*(5*B*a^2*b^3 - 4*A*a*b^4)*x^6 + 12*B*a^5 - 12*A*a^4*b - 6*(
5*B*a^3*b^2 - 4*A*a^2*b^3)*x^4 - 12*(4*B*a^4*b - 3*A*a^3*b^2)*x^2 + 12*(5*B*a^5 - 4*A*a^4*b + (5*B*a^4*b - 4*A
*a^3*b^2)*x^2)*log(b*x^2 + a))/(b^7*x^2 + a*b^6)

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giac [A]  time = 0.35, size = 159, normalized size = 1.26 \[ \frac {{\left (5 \, B a^{4} - 4 \, A a^{3} b\right )} \log \left ({\left | b x^{2} + a \right |}\right )}{2 \, b^{6}} - \frac {5 \, B a^{4} b x^{2} - 4 \, A a^{3} b^{2} x^{2} + 4 \, B a^{5} - 3 \, A a^{4} b}{2 \, {\left (b x^{2} + a\right )} b^{6}} + \frac {3 \, B b^{6} x^{8} - 8 \, B a b^{5} x^{6} + 4 \, A b^{6} x^{6} + 18 \, B a^{2} b^{4} x^{4} - 12 \, A a b^{5} x^{4} - 48 \, B a^{3} b^{3} x^{2} + 36 \, A a^{2} b^{4} x^{2}}{24 \, b^{8}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^9*(B*x^2+A)/(b*x^2+a)^2,x, algorithm="giac")

[Out]

1/2*(5*B*a^4 - 4*A*a^3*b)*log(abs(b*x^2 + a))/b^6 - 1/2*(5*B*a^4*b*x^2 - 4*A*a^3*b^2*x^2 + 4*B*a^5 - 3*A*a^4*b
)/((b*x^2 + a)*b^6) + 1/24*(3*B*b^6*x^8 - 8*B*a*b^5*x^6 + 4*A*b^6*x^6 + 18*B*a^2*b^4*x^4 - 12*A*a*b^5*x^4 - 48
*B*a^3*b^3*x^2 + 36*A*a^2*b^4*x^2)/b^8

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maple [A]  time = 0.02, size = 146, normalized size = 1.16 \[ \frac {B \,x^{8}}{8 b^{2}}+\frac {A \,x^{6}}{6 b^{2}}-\frac {B a \,x^{6}}{3 b^{3}}-\frac {A a \,x^{4}}{2 b^{3}}+\frac {3 B \,a^{2} x^{4}}{4 b^{4}}+\frac {3 A \,a^{2} x^{2}}{2 b^{4}}-\frac {2 B \,a^{3} x^{2}}{b^{5}}-\frac {A \,a^{4}}{2 \left (b \,x^{2}+a \right ) b^{5}}-\frac {2 A \,a^{3} \ln \left (b \,x^{2}+a \right )}{b^{5}}+\frac {B \,a^{5}}{2 \left (b \,x^{2}+a \right ) b^{6}}+\frac {5 B \,a^{4} \ln \left (b \,x^{2}+a \right )}{2 b^{6}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(x^9*(B*x^2+A)/(b*x^2+a)^2,x)

[Out]

1/8*B*x^8/b^2+1/6/b^2*x^6*A-1/3/b^3*x^6*B*a-1/2/b^3*x^4*A*a+3/4/b^4*x^4*B*a^2+3/2/b^4*x^2*A*a^2-2/b^5*x^2*B*a^
3-1/2*a^4/b^5/(b*x^2+a)*A+1/2*a^5/b^6/(b*x^2+a)*B-2*a^3/b^5*ln(b*x^2+a)*A+5/2*a^4/b^6*ln(b*x^2+a)*B

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maxima [A]  time = 1.09, size = 131, normalized size = 1.04 \[ \frac {B a^{5} - A a^{4} b}{2 \, {\left (b^{7} x^{2} + a b^{6}\right )}} + \frac {3 \, B b^{3} x^{8} - 4 \, {\left (2 \, B a b^{2} - A b^{3}\right )} x^{6} + 6 \, {\left (3 \, B a^{2} b - 2 \, A a b^{2}\right )} x^{4} - 12 \, {\left (4 \, B a^{3} - 3 \, A a^{2} b\right )} x^{2}}{24 \, b^{5}} + \frac {{\left (5 \, B a^{4} - 4 \, A a^{3} b\right )} \log \left (b x^{2} + a\right )}{2 \, b^{6}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^9*(B*x^2+A)/(b*x^2+a)^2,x, algorithm="maxima")

[Out]

1/2*(B*a^5 - A*a^4*b)/(b^7*x^2 + a*b^6) + 1/24*(3*B*b^3*x^8 - 4*(2*B*a*b^2 - A*b^3)*x^6 + 6*(3*B*a^2*b - 2*A*a
*b^2)*x^4 - 12*(4*B*a^3 - 3*A*a^2*b)*x^2)/b^5 + 1/2*(5*B*a^4 - 4*A*a^3*b)*log(b*x^2 + a)/b^6

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mupad [B]  time = 0.10, size = 181, normalized size = 1.44 \[ x^2\,\left (\frac {a\,\left (\frac {2\,a\,\left (\frac {A}{b^2}-\frac {2\,B\,a}{b^3}\right )}{b}+\frac {B\,a^2}{b^4}\right )}{b}-\frac {a^2\,\left (\frac {A}{b^2}-\frac {2\,B\,a}{b^3}\right )}{2\,b^2}\right )+x^6\,\left (\frac {A}{6\,b^2}-\frac {B\,a}{3\,b^3}\right )-x^4\,\left (\frac {a\,\left (\frac {A}{b^2}-\frac {2\,B\,a}{b^3}\right )}{2\,b}+\frac {B\,a^2}{4\,b^4}\right )+\frac {B\,x^8}{8\,b^2}+\frac {\ln \left (b\,x^2+a\right )\,\left (5\,B\,a^4-4\,A\,a^3\,b\right )}{2\,b^6}+\frac {B\,a^5-A\,a^4\,b}{2\,b\,\left (b^6\,x^2+a\,b^5\right )} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((x^9*(A + B*x^2))/(a + b*x^2)^2,x)

[Out]

x^2*((a*((2*a*(A/b^2 - (2*B*a)/b^3))/b + (B*a^2)/b^4))/b - (a^2*(A/b^2 - (2*B*a)/b^3))/(2*b^2)) + x^6*(A/(6*b^
2) - (B*a)/(3*b^3)) - x^4*((a*(A/b^2 - (2*B*a)/b^3))/(2*b) + (B*a^2)/(4*b^4)) + (B*x^8)/(8*b^2) + (log(a + b*x
^2)*(5*B*a^4 - 4*A*a^3*b))/(2*b^6) + (B*a^5 - A*a^4*b)/(2*b*(a*b^5 + b^6*x^2))

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sympy [A]  time = 0.79, size = 131, normalized size = 1.04 \[ \frac {B x^{8}}{8 b^{2}} + \frac {a^{3} \left (- 4 A b + 5 B a\right ) \log {\left (a + b x^{2} \right )}}{2 b^{6}} + x^{6} \left (\frac {A}{6 b^{2}} - \frac {B a}{3 b^{3}}\right ) + x^{4} \left (- \frac {A a}{2 b^{3}} + \frac {3 B a^{2}}{4 b^{4}}\right ) + x^{2} \left (\frac {3 A a^{2}}{2 b^{4}} - \frac {2 B a^{3}}{b^{5}}\right ) + \frac {- A a^{4} b + B a^{5}}{2 a b^{6} + 2 b^{7} x^{2}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x**9*(B*x**2+A)/(b*x**2+a)**2,x)

[Out]

B*x**8/(8*b**2) + a**3*(-4*A*b + 5*B*a)*log(a + b*x**2)/(2*b**6) + x**6*(A/(6*b**2) - B*a/(3*b**3)) + x**4*(-A
*a/(2*b**3) + 3*B*a**2/(4*b**4)) + x**2*(3*A*a**2/(2*b**4) - 2*B*a**3/b**5) + (-A*a**4*b + B*a**5)/(2*a*b**6 +
2*b**7*x**2)

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