3.610 \(\int \frac {(a+b x^2)^2 \sqrt {c+d x^2}}{x^8} \, dx\)

Optimal. Leaf size=99 \[ -\frac {a^2 \left (c+d x^2\right )^{3/2}}{7 c x^7}-\frac {\left (c+d x^2\right )^{3/2} \left (35 b^2 c^2-4 a d (7 b c-2 a d)\right )}{105 c^3 x^3}-\frac {2 a \left (c+d x^2\right )^{3/2} (7 b c-2 a d)}{35 c^2 x^5} \]

[Out]

-1/7*a^2*(d*x^2+c)^(3/2)/c/x^7-2/35*a*(-2*a*d+7*b*c)*(d*x^2+c)^(3/2)/c^2/x^5-1/105*(35*b^2*c^2-4*a*d*(-2*a*d+7
*b*c))*(d*x^2+c)^(3/2)/c^3/x^3

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Rubi [A]  time = 0.07, antiderivative size = 100, normalized size of antiderivative = 1.01, number of steps used = 3, number of rules used = 3, integrand size = 24, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.125, Rules used = {462, 453, 264} \[ -\frac {\left (c+d x^2\right )^{3/2} \left (8 a^2 d^2-28 a b c d+35 b^2 c^2\right )}{105 c^3 x^3}-\frac {a^2 \left (c+d x^2\right )^{3/2}}{7 c x^7}-\frac {2 a \left (c+d x^2\right )^{3/2} (7 b c-2 a d)}{35 c^2 x^5} \]

Antiderivative was successfully verified.

[In]

Int[((a + b*x^2)^2*Sqrt[c + d*x^2])/x^8,x]

[Out]

-(a^2*(c + d*x^2)^(3/2))/(7*c*x^7) - (2*a*(7*b*c - 2*a*d)*(c + d*x^2)^(3/2))/(35*c^2*x^5) - ((35*b^2*c^2 - 28*
a*b*c*d + 8*a^2*d^2)*(c + d*x^2)^(3/2))/(105*c^3*x^3)

Rule 264

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

Rule 453

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

Rule 462

Int[((e_.)*(x_))^(m_)*((a_) + (b_.)*(x_)^(n_))^(p_)*((c_) + (d_.)*(x_)^(n_))^2, x_Symbol] :> Simp[(c^2*(e*x)^(
m + 1)*(a + b*x^n)^(p + 1))/(a*e*(m + 1)), x] - Dist[1/(a*e^n*(m + 1)), Int[(e*x)^(m + n)*(a + b*x^n)^p*Simp[b
*c^2*n*(p + 1) + c*(b*c - 2*a*d)*(m + 1) - a*(m + 1)*d^2*x^n, x], x], x] /; FreeQ[{a, b, c, d, e, p}, x] && Ne
Q[b*c - a*d, 0] && IGtQ[n, 0] && LtQ[m, -1] && GtQ[n, 0]

Rubi steps

\begin {align*} \int \frac {\left (a+b x^2\right )^2 \sqrt {c+d x^2}}{x^8} \, dx &=-\frac {a^2 \left (c+d x^2\right )^{3/2}}{7 c x^7}+\frac {\int \frac {\left (2 a (7 b c-2 a d)+7 b^2 c x^2\right ) \sqrt {c+d x^2}}{x^6} \, dx}{7 c}\\ &=-\frac {a^2 \left (c+d x^2\right )^{3/2}}{7 c x^7}-\frac {2 a (7 b c-2 a d) \left (c+d x^2\right )^{3/2}}{35 c^2 x^5}-\frac {1}{35} \left (-35 b^2+\frac {4 a d (7 b c-2 a d)}{c^2}\right ) \int \frac {\sqrt {c+d x^2}}{x^4} \, dx\\ &=-\frac {a^2 \left (c+d x^2\right )^{3/2}}{7 c x^7}-\frac {2 a (7 b c-2 a d) \left (c+d x^2\right )^{3/2}}{35 c^2 x^5}-\frac {\left (35 b^2-\frac {4 a d (7 b c-2 a d)}{c^2}\right ) \left (c+d x^2\right )^{3/2}}{105 c x^3}\\ \end {align*}

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Mathematica [A]  time = 0.05, size = 76, normalized size = 0.77 \[ -\frac {\left (c+d x^2\right )^{3/2} \left (a^2 \left (15 c^2-12 c d x^2+8 d^2 x^4\right )+14 a b c x^2 \left (3 c-2 d x^2\right )+35 b^2 c^2 x^4\right )}{105 c^3 x^7} \]

Antiderivative was successfully verified.

[In]

Integrate[((a + b*x^2)^2*Sqrt[c + d*x^2])/x^8,x]

[Out]

-1/105*((c + d*x^2)^(3/2)*(35*b^2*c^2*x^4 + 14*a*b*c*x^2*(3*c - 2*d*x^2) + a^2*(15*c^2 - 12*c*d*x^2 + 8*d^2*x^
4)))/(c^3*x^7)

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fricas [A]  time = 0.67, size = 107, normalized size = 1.08 \[ -\frac {{\left ({\left (35 \, b^{2} c^{2} d - 28 \, a b c d^{2} + 8 \, a^{2} d^{3}\right )} x^{6} + 15 \, a^{2} c^{3} + {\left (35 \, b^{2} c^{3} + 14 \, a b c^{2} d - 4 \, a^{2} c d^{2}\right )} x^{4} + 3 \, {\left (14 \, a b c^{3} + a^{2} c^{2} d\right )} x^{2}\right )} \sqrt {d x^{2} + c}}{105 \, c^{3} x^{7}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b*x^2+a)^2*(d*x^2+c)^(1/2)/x^8,x, algorithm="fricas")

[Out]

-1/105*((35*b^2*c^2*d - 28*a*b*c*d^2 + 8*a^2*d^3)*x^6 + 15*a^2*c^3 + (35*b^2*c^3 + 14*a*b*c^2*d - 4*a^2*c*d^2)
*x^4 + 3*(14*a*b*c^3 + a^2*c^2*d)*x^2)*sqrt(d*x^2 + c)/(c^3*x^7)

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giac [B]  time = 0.44, size = 490, normalized size = 4.95 \[ \frac {2 \, {\left (105 \, {\left (\sqrt {d} x - \sqrt {d x^{2} + c}\right )}^{12} b^{2} d^{\frac {3}{2}} - 420 \, {\left (\sqrt {d} x - \sqrt {d x^{2} + c}\right )}^{10} b^{2} c d^{\frac {3}{2}} + 420 \, {\left (\sqrt {d} x - \sqrt {d x^{2} + c}\right )}^{10} a b d^{\frac {5}{2}} + 665 \, {\left (\sqrt {d} x - \sqrt {d x^{2} + c}\right )}^{8} b^{2} c^{2} d^{\frac {3}{2}} - 700 \, {\left (\sqrt {d} x - \sqrt {d x^{2} + c}\right )}^{8} a b c d^{\frac {5}{2}} + 560 \, {\left (\sqrt {d} x - \sqrt {d x^{2} + c}\right )}^{8} a^{2} d^{\frac {7}{2}} - 560 \, {\left (\sqrt {d} x - \sqrt {d x^{2} + c}\right )}^{6} b^{2} c^{3} d^{\frac {3}{2}} + 280 \, {\left (\sqrt {d} x - \sqrt {d x^{2} + c}\right )}^{6} a b c^{2} d^{\frac {5}{2}} + 280 \, {\left (\sqrt {d} x - \sqrt {d x^{2} + c}\right )}^{6} a^{2} c d^{\frac {7}{2}} + 315 \, {\left (\sqrt {d} x - \sqrt {d x^{2} + c}\right )}^{4} b^{2} c^{4} d^{\frac {3}{2}} - 168 \, {\left (\sqrt {d} x - \sqrt {d x^{2} + c}\right )}^{4} a b c^{3} d^{\frac {5}{2}} + 168 \, {\left (\sqrt {d} x - \sqrt {d x^{2} + c}\right )}^{4} a^{2} c^{2} d^{\frac {7}{2}} - 140 \, {\left (\sqrt {d} x - \sqrt {d x^{2} + c}\right )}^{2} b^{2} c^{5} d^{\frac {3}{2}} + 196 \, {\left (\sqrt {d} x - \sqrt {d x^{2} + c}\right )}^{2} a b c^{4} d^{\frac {5}{2}} - 56 \, {\left (\sqrt {d} x - \sqrt {d x^{2} + c}\right )}^{2} a^{2} c^{3} d^{\frac {7}{2}} + 35 \, b^{2} c^{6} d^{\frac {3}{2}} - 28 \, a b c^{5} d^{\frac {5}{2}} + 8 \, a^{2} c^{4} d^{\frac {7}{2}}\right )}}{105 \, {\left ({\left (\sqrt {d} x - \sqrt {d x^{2} + c}\right )}^{2} - c\right )}^{7}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b*x^2+a)^2*(d*x^2+c)^(1/2)/x^8,x, algorithm="giac")

[Out]

2/105*(105*(sqrt(d)*x - sqrt(d*x^2 + c))^12*b^2*d^(3/2) - 420*(sqrt(d)*x - sqrt(d*x^2 + c))^10*b^2*c*d^(3/2) +
420*(sqrt(d)*x - sqrt(d*x^2 + c))^10*a*b*d^(5/2) + 665*(sqrt(d)*x - sqrt(d*x^2 + c))^8*b^2*c^2*d^(3/2) - 700*
(sqrt(d)*x - sqrt(d*x^2 + c))^8*a*b*c*d^(5/2) + 560*(sqrt(d)*x - sqrt(d*x^2 + c))^8*a^2*d^(7/2) - 560*(sqrt(d)
*x - sqrt(d*x^2 + c))^6*b^2*c^3*d^(3/2) + 280*(sqrt(d)*x - sqrt(d*x^2 + c))^6*a*b*c^2*d^(5/2) + 280*(sqrt(d)*x
- sqrt(d*x^2 + c))^6*a^2*c*d^(7/2) + 315*(sqrt(d)*x - sqrt(d*x^2 + c))^4*b^2*c^4*d^(3/2) - 168*(sqrt(d)*x - s
qrt(d*x^2 + c))^4*a*b*c^3*d^(5/2) + 168*(sqrt(d)*x - sqrt(d*x^2 + c))^4*a^2*c^2*d^(7/2) - 140*(sqrt(d)*x - sqr
t(d*x^2 + c))^2*b^2*c^5*d^(3/2) + 196*(sqrt(d)*x - sqrt(d*x^2 + c))^2*a*b*c^4*d^(5/2) - 56*(sqrt(d)*x - sqrt(d
*x^2 + c))^2*a^2*c^3*d^(7/2) + 35*b^2*c^6*d^(3/2) - 28*a*b*c^5*d^(5/2) + 8*a^2*c^4*d^(7/2))/((sqrt(d)*x - sqrt
(d*x^2 + c))^2 - c)^7

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maple [A]  time = 0.01, size = 78, normalized size = 0.79 \[ -\frac {\left (d \,x^{2}+c \right )^{\frac {3}{2}} \left (8 a^{2} d^{2} x^{4}-28 a b c d \,x^{4}+35 b^{2} c^{2} x^{4}-12 a^{2} c d \,x^{2}+42 a b \,c^{2} x^{2}+15 a^{2} c^{2}\right )}{105 c^{3} x^{7}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((b*x^2+a)^2*(d*x^2+c)^(1/2)/x^8,x)

[Out]

-1/105*(d*x^2+c)^(3/2)*(8*a^2*d^2*x^4-28*a*b*c*d*x^4+35*b^2*c^2*x^4-12*a^2*c*d*x^2+42*a*b*c^2*x^2+15*a^2*c^2)/
x^7/c^3

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maxima [A]  time = 1.10, size = 124, normalized size = 1.25 \[ -\frac {{\left (d x^{2} + c\right )}^{\frac {3}{2}} b^{2}}{3 \, c x^{3}} + \frac {4 \, {\left (d x^{2} + c\right )}^{\frac {3}{2}} a b d}{15 \, c^{2} x^{3}} - \frac {8 \, {\left (d x^{2} + c\right )}^{\frac {3}{2}} a^{2} d^{2}}{105 \, c^{3} x^{3}} - \frac {2 \, {\left (d x^{2} + c\right )}^{\frac {3}{2}} a b}{5 \, c x^{5}} + \frac {4 \, {\left (d x^{2} + c\right )}^{\frac {3}{2}} a^{2} d}{35 \, c^{2} x^{5}} - \frac {{\left (d x^{2} + c\right )}^{\frac {3}{2}} a^{2}}{7 \, c x^{7}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b*x^2+a)^2*(d*x^2+c)^(1/2)/x^8,x, algorithm="maxima")

[Out]

-1/3*(d*x^2 + c)^(3/2)*b^2/(c*x^3) + 4/15*(d*x^2 + c)^(3/2)*a*b*d/(c^2*x^3) - 8/105*(d*x^2 + c)^(3/2)*a^2*d^2/
(c^3*x^3) - 2/5*(d*x^2 + c)^(3/2)*a*b/(c*x^5) + 4/35*(d*x^2 + c)^(3/2)*a^2*d/(c^2*x^5) - 1/7*(d*x^2 + c)^(3/2)
*a^2/(c*x^7)

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mupad [B]  time = 1.63, size = 181, normalized size = 1.83 \[ \frac {4\,a^2\,d^2\,\sqrt {d\,x^2+c}}{105\,c^2\,x^3}-\frac {b^2\,\sqrt {d\,x^2+c}}{3\,x^3}-\frac {2\,a\,b\,\sqrt {d\,x^2+c}}{5\,x^5}-\frac {a^2\,\sqrt {d\,x^2+c}}{7\,x^7}-\frac {8\,a^2\,d^3\,\sqrt {d\,x^2+c}}{105\,c^3\,x}-\frac {a^2\,d\,\sqrt {d\,x^2+c}}{35\,c\,x^5}-\frac {b^2\,d\,\sqrt {d\,x^2+c}}{3\,c\,x}+\frac {4\,a\,b\,d^2\,\sqrt {d\,x^2+c}}{15\,c^2\,x}-\frac {2\,a\,b\,d\,\sqrt {d\,x^2+c}}{15\,c\,x^3} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(((a + b*x^2)^2*(c + d*x^2)^(1/2))/x^8,x)

[Out]

(4*a^2*d^2*(c + d*x^2)^(1/2))/(105*c^2*x^3) - (b^2*(c + d*x^2)^(1/2))/(3*x^3) - (2*a*b*(c + d*x^2)^(1/2))/(5*x
^5) - (a^2*(c + d*x^2)^(1/2))/(7*x^7) - (8*a^2*d^3*(c + d*x^2)^(1/2))/(105*c^3*x) - (a^2*d*(c + d*x^2)^(1/2))/
(35*c*x^5) - (b^2*d*(c + d*x^2)^(1/2))/(3*c*x) + (4*a*b*d^2*(c + d*x^2)^(1/2))/(15*c^2*x) - (2*a*b*d*(c + d*x^
2)^(1/2))/(15*c*x^3)

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sympy [B]  time = 4.51, size = 510, normalized size = 5.15 \[ - \frac {15 a^{2} c^{5} d^{\frac {9}{2}} \sqrt {\frac {c}{d x^{2}} + 1}}{105 c^{5} d^{4} x^{6} + 210 c^{4} d^{5} x^{8} + 105 c^{3} d^{6} x^{10}} - \frac {33 a^{2} c^{4} d^{\frac {11}{2}} x^{2} \sqrt {\frac {c}{d x^{2}} + 1}}{105 c^{5} d^{4} x^{6} + 210 c^{4} d^{5} x^{8} + 105 c^{3} d^{6} x^{10}} - \frac {17 a^{2} c^{3} d^{\frac {13}{2}} x^{4} \sqrt {\frac {c}{d x^{2}} + 1}}{105 c^{5} d^{4} x^{6} + 210 c^{4} d^{5} x^{8} + 105 c^{3} d^{6} x^{10}} - \frac {3 a^{2} c^{2} d^{\frac {15}{2}} x^{6} \sqrt {\frac {c}{d x^{2}} + 1}}{105 c^{5} d^{4} x^{6} + 210 c^{4} d^{5} x^{8} + 105 c^{3} d^{6} x^{10}} - \frac {12 a^{2} c d^{\frac {17}{2}} x^{8} \sqrt {\frac {c}{d x^{2}} + 1}}{105 c^{5} d^{4} x^{6} + 210 c^{4} d^{5} x^{8} + 105 c^{3} d^{6} x^{10}} - \frac {8 a^{2} d^{\frac {19}{2}} x^{10} \sqrt {\frac {c}{d x^{2}} + 1}}{105 c^{5} d^{4} x^{6} + 210 c^{4} d^{5} x^{8} + 105 c^{3} d^{6} x^{10}} - \frac {2 a b \sqrt {d} \sqrt {\frac {c}{d x^{2}} + 1}}{5 x^{4}} - \frac {2 a b d^{\frac {3}{2}} \sqrt {\frac {c}{d x^{2}} + 1}}{15 c x^{2}} + \frac {4 a b d^{\frac {5}{2}} \sqrt {\frac {c}{d x^{2}} + 1}}{15 c^{2}} - \frac {b^{2} \sqrt {d} \sqrt {\frac {c}{d x^{2}} + 1}}{3 x^{2}} - \frac {b^{2} d^{\frac {3}{2}} \sqrt {\frac {c}{d x^{2}} + 1}}{3 c} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b*x**2+a)**2*(d*x**2+c)**(1/2)/x**8,x)

[Out]

-15*a**2*c**5*d**(9/2)*sqrt(c/(d*x**2) + 1)/(105*c**5*d**4*x**6 + 210*c**4*d**5*x**8 + 105*c**3*d**6*x**10) -
33*a**2*c**4*d**(11/2)*x**2*sqrt(c/(d*x**2) + 1)/(105*c**5*d**4*x**6 + 210*c**4*d**5*x**8 + 105*c**3*d**6*x**1
0) - 17*a**2*c**3*d**(13/2)*x**4*sqrt(c/(d*x**2) + 1)/(105*c**5*d**4*x**6 + 210*c**4*d**5*x**8 + 105*c**3*d**6
*x**10) - 3*a**2*c**2*d**(15/2)*x**6*sqrt(c/(d*x**2) + 1)/(105*c**5*d**4*x**6 + 210*c**4*d**5*x**8 + 105*c**3*
d**6*x**10) - 12*a**2*c*d**(17/2)*x**8*sqrt(c/(d*x**2) + 1)/(105*c**5*d**4*x**6 + 210*c**4*d**5*x**8 + 105*c**
3*d**6*x**10) - 8*a**2*d**(19/2)*x**10*sqrt(c/(d*x**2) + 1)/(105*c**5*d**4*x**6 + 210*c**4*d**5*x**8 + 105*c**
3*d**6*x**10) - 2*a*b*sqrt(d)*sqrt(c/(d*x**2) + 1)/(5*x**4) - 2*a*b*d**(3/2)*sqrt(c/(d*x**2) + 1)/(15*c*x**2)
+ 4*a*b*d**(5/2)*sqrt(c/(d*x**2) + 1)/(15*c**2) - b**2*sqrt(d)*sqrt(c/(d*x**2) + 1)/(3*x**2) - b**2*d**(3/2)*s
qrt(c/(d*x**2) + 1)/(3*c)

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