3.796 \(\int \frac{(A+B x) (a^2+2 a b x+b^2 x^2)^{3/2}}{x^{3/2}} \, dx\)

Optimal. Leaf size=214 \[ \frac{2 b^2 x^{5/2} \sqrt{a^2+2 a b x+b^2 x^2} (3 a B+A b)}{5 (a+b x)}+\frac{2 a b x^{3/2} \sqrt{a^2+2 a b x+b^2 x^2} (a B+A b)}{a+b x}+\frac{2 a^2 \sqrt{x} \sqrt{a^2+2 a b x+b^2 x^2} (a B+3 A b)}{a+b x}-\frac{2 a^3 A \sqrt{a^2+2 a b x+b^2 x^2}}{\sqrt{x} (a+b x)}+\frac{2 b^3 B x^{7/2} \sqrt{a^2+2 a b x+b^2 x^2}}{7 (a+b x)} \]

[Out]

(-2*a^3*A*Sqrt[a^2 + 2*a*b*x + b^2*x^2])/(Sqrt[x]*(a + b*x)) + (2*a^2*(3*A*b + a*B)*Sqrt[x]*Sqrt[a^2 + 2*a*b*x
+ b^2*x^2])/(a + b*x) + (2*a*b*(A*b + a*B)*x^(3/2)*Sqrt[a^2 + 2*a*b*x + b^2*x^2])/(a + b*x) + (2*b^2*(A*b + 3
*a*B)*x^(5/2)*Sqrt[a^2 + 2*a*b*x + b^2*x^2])/(5*(a + b*x)) + (2*b^3*B*x^(7/2)*Sqrt[a^2 + 2*a*b*x + b^2*x^2])/(
7*(a + b*x))

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Rubi [A]  time = 0.0862784, antiderivative size = 214, normalized size of antiderivative = 1., number of steps used = 3, number of rules used = 2, integrand size = 31, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.065, Rules used = {770, 76} \[ \frac{2 b^2 x^{5/2} \sqrt{a^2+2 a b x+b^2 x^2} (3 a B+A b)}{5 (a+b x)}+\frac{2 a b x^{3/2} \sqrt{a^2+2 a b x+b^2 x^2} (a B+A b)}{a+b x}+\frac{2 a^2 \sqrt{x} \sqrt{a^2+2 a b x+b^2 x^2} (a B+3 A b)}{a+b x}-\frac{2 a^3 A \sqrt{a^2+2 a b x+b^2 x^2}}{\sqrt{x} (a+b x)}+\frac{2 b^3 B x^{7/2} \sqrt{a^2+2 a b x+b^2 x^2}}{7 (a+b x)} \]

Antiderivative was successfully verified.

[In]

Int[((A + B*x)*(a^2 + 2*a*b*x + b^2*x^2)^(3/2))/x^(3/2),x]

[Out]

(-2*a^3*A*Sqrt[a^2 + 2*a*b*x + b^2*x^2])/(Sqrt[x]*(a + b*x)) + (2*a^2*(3*A*b + a*B)*Sqrt[x]*Sqrt[a^2 + 2*a*b*x
+ b^2*x^2])/(a + b*x) + (2*a*b*(A*b + a*B)*x^(3/2)*Sqrt[a^2 + 2*a*b*x + b^2*x^2])/(a + b*x) + (2*b^2*(A*b + 3
*a*B)*x^(5/2)*Sqrt[a^2 + 2*a*b*x + b^2*x^2])/(5*(a + b*x)) + (2*b^3*B*x^(7/2)*Sqrt[a^2 + 2*a*b*x + b^2*x^2])/(
7*(a + b*x))

Rule 770

Int[((d_.) + (e_.)*(x_))^(m_.)*((f_.) + (g_.)*(x_))*((a_.) + (b_.)*(x_) + (c_.)*(x_)^2)^(p_), x_Symbol] :> Dis
t[(a + b*x + c*x^2)^FracPart[p]/(c^IntPart[p]*(b/2 + c*x)^(2*FracPart[p])), Int[(d + e*x)^m*(f + g*x)*(b/2 + c
*x)^(2*p), x], x] /; FreeQ[{a, b, c, d, e, f, g, m}, x] && EqQ[b^2 - 4*a*c, 0]

Rule 76

Int[((d_.)*(x_))^(n_.)*((a_) + (b_.)*(x_))*((e_) + (f_.)*(x_))^(p_.), x_Symbol] :> Int[ExpandIntegrand[(a + b*
x)*(d*x)^n*(e + f*x)^p, x], x] /; FreeQ[{a, b, d, e, f, n}, x] && IGtQ[p, 0] && (NeQ[n, -1] || EqQ[p, 1]) && N
eQ[b*e + a*f, 0] && ( !IntegerQ[n] || LtQ[9*p + 5*n, 0] || GeQ[n + p + 1, 0] || (GeQ[n + p + 2, 0] && Rational
Q[a, b, d, e, f])) && (NeQ[n + p + 3, 0] || EqQ[p, 1])

Rubi steps

\begin{align*} \int \frac{(A+B x) \left (a^2+2 a b x+b^2 x^2\right )^{3/2}}{x^{3/2}} \, dx &=\frac{\sqrt{a^2+2 a b x+b^2 x^2} \int \frac{\left (a b+b^2 x\right )^3 (A+B x)}{x^{3/2}} \, dx}{b^2 \left (a b+b^2 x\right )}\\ &=\frac{\sqrt{a^2+2 a b x+b^2 x^2} \int \left (\frac{a^3 A b^3}{x^{3/2}}+\frac{a^2 b^3 (3 A b+a B)}{\sqrt{x}}+3 a b^4 (A b+a B) \sqrt{x}+b^5 (A b+3 a B) x^{3/2}+b^6 B x^{5/2}\right ) \, dx}{b^2 \left (a b+b^2 x\right )}\\ &=-\frac{2 a^3 A \sqrt{a^2+2 a b x+b^2 x^2}}{\sqrt{x} (a+b x)}+\frac{2 a^2 (3 A b+a B) \sqrt{x} \sqrt{a^2+2 a b x+b^2 x^2}}{a+b x}+\frac{2 a b (A b+a B) x^{3/2} \sqrt{a^2+2 a b x+b^2 x^2}}{a+b x}+\frac{2 b^2 (A b+3 a B) x^{5/2} \sqrt{a^2+2 a b x+b^2 x^2}}{5 (a+b x)}+\frac{2 b^3 B x^{7/2} \sqrt{a^2+2 a b x+b^2 x^2}}{7 (a+b x)}\\ \end{align*}

Mathematica [A]  time = 0.034925, size = 85, normalized size = 0.4 \[ \frac{2 \sqrt{(a+b x)^2} \left (35 a^2 b x (3 A+B x)-35 a^3 (A-B x)+7 a b^2 x^2 (5 A+3 B x)+b^3 x^3 (7 A+5 B x)\right )}{35 \sqrt{x} (a+b x)} \]

Antiderivative was successfully verified.

[In]

Integrate[((A + B*x)*(a^2 + 2*a*b*x + b^2*x^2)^(3/2))/x^(3/2),x]

[Out]

(2*Sqrt[(a + b*x)^2]*(-35*a^3*(A - B*x) + 35*a^2*b*x*(3*A + B*x) + 7*a*b^2*x^2*(5*A + 3*B*x) + b^3*x^3*(7*A +
5*B*x)))/(35*Sqrt[x]*(a + b*x))

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Maple [A]  time = 0.006, size = 92, normalized size = 0.4 \begin{align*} -{\frac{-10\,B{x}^{4}{b}^{3}-14\,A{b}^{3}{x}^{3}-42\,B{x}^{3}a{b}^{2}-70\,A{x}^{2}a{b}^{2}-70\,B{x}^{2}{a}^{2}b-210\,A{a}^{2}bx-70\,{a}^{3}Bx+70\,A{a}^{3}}{35\, \left ( bx+a \right ) ^{3}} \left ( \left ( bx+a \right ) ^{2} \right ) ^{{\frac{3}{2}}}{\frac{1}{\sqrt{x}}}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((B*x+A)*(b^2*x^2+2*a*b*x+a^2)^(3/2)/x^(3/2),x)

[Out]

-2/35*(-5*B*b^3*x^4-7*A*b^3*x^3-21*B*a*b^2*x^3-35*A*a*b^2*x^2-35*B*a^2*b*x^2-105*A*a^2*b*x-35*B*a^3*x+35*A*a^3
)*((b*x+a)^2)^(3/2)/x^(1/2)/(b*x+a)^3

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Maxima [A]  time = 1.09734, size = 180, normalized size = 0.84 \begin{align*} \frac{2}{15} \,{\left ({\left (3 \, b^{3} x^{2} + 5 \, a b^{2} x\right )} \sqrt{x} + \frac{10 \,{\left (a b^{2} x^{2} + 3 \, a^{2} b x\right )}}{\sqrt{x}} + \frac{15 \,{\left (a^{2} b x^{2} - a^{3} x\right )}}{x^{\frac{3}{2}}}\right )} A + \frac{2}{105} \,{\left (3 \,{\left (5 \, b^{3} x^{2} + 7 \, a b^{2} x\right )} x^{\frac{3}{2}} + 14 \,{\left (3 \, a b^{2} x^{2} + 5 \, a^{2} b x\right )} \sqrt{x} + \frac{35 \,{\left (a^{2} b x^{2} + 3 \, a^{3} x\right )}}{\sqrt{x}}\right )} B \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((B*x+A)*(b^2*x^2+2*a*b*x+a^2)^(3/2)/x^(3/2),x, algorithm="maxima")

[Out]

2/15*((3*b^3*x^2 + 5*a*b^2*x)*sqrt(x) + 10*(a*b^2*x^2 + 3*a^2*b*x)/sqrt(x) + 15*(a^2*b*x^2 - a^3*x)/x^(3/2))*A
+ 2/105*(3*(5*b^3*x^2 + 7*a*b^2*x)*x^(3/2) + 14*(3*a*b^2*x^2 + 5*a^2*b*x)*sqrt(x) + 35*(a^2*b*x^2 + 3*a^3*x)/
sqrt(x))*B

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Fricas [A]  time = 1.52283, size = 166, normalized size = 0.78 \begin{align*} \frac{2 \,{\left (5 \, B b^{3} x^{4} - 35 \, A a^{3} + 7 \,{\left (3 \, B a b^{2} + A b^{3}\right )} x^{3} + 35 \,{\left (B a^{2} b + A a b^{2}\right )} x^{2} + 35 \,{\left (B a^{3} + 3 \, A a^{2} b\right )} x\right )}}{35 \, \sqrt{x}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((B*x+A)*(b^2*x^2+2*a*b*x+a^2)^(3/2)/x^(3/2),x, algorithm="fricas")

[Out]

2/35*(5*B*b^3*x^4 - 35*A*a^3 + 7*(3*B*a*b^2 + A*b^3)*x^3 + 35*(B*a^2*b + A*a*b^2)*x^2 + 35*(B*a^3 + 3*A*a^2*b)
*x)/sqrt(x)

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Sympy [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{\left (A + B x\right ) \left (\left (a + b x\right )^{2}\right )^{\frac{3}{2}}}{x^{\frac{3}{2}}}\, dx \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((B*x+A)*(b**2*x**2+2*a*b*x+a**2)**(3/2)/x**(3/2),x)

[Out]

Integral((A + B*x)*((a + b*x)**2)**(3/2)/x**(3/2), x)

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Giac [A]  time = 1.17764, size = 169, normalized size = 0.79 \begin{align*} \frac{2}{7} \, B b^{3} x^{\frac{7}{2}} \mathrm{sgn}\left (b x + a\right ) + \frac{6}{5} \, B a b^{2} x^{\frac{5}{2}} \mathrm{sgn}\left (b x + a\right ) + \frac{2}{5} \, A b^{3} x^{\frac{5}{2}} \mathrm{sgn}\left (b x + a\right ) + 2 \, B a^{2} b x^{\frac{3}{2}} \mathrm{sgn}\left (b x + a\right ) + 2 \, A a b^{2} x^{\frac{3}{2}} \mathrm{sgn}\left (b x + a\right ) + 2 \, B a^{3} \sqrt{x} \mathrm{sgn}\left (b x + a\right ) + 6 \, A a^{2} b \sqrt{x} \mathrm{sgn}\left (b x + a\right ) - \frac{2 \, A a^{3} \mathrm{sgn}\left (b x + a\right )}{\sqrt{x}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((B*x+A)*(b^2*x^2+2*a*b*x+a^2)^(3/2)/x^(3/2),x, algorithm="giac")

[Out]

2/7*B*b^3*x^(7/2)*sgn(b*x + a) + 6/5*B*a*b^2*x^(5/2)*sgn(b*x + a) + 2/5*A*b^3*x^(5/2)*sgn(b*x + a) + 2*B*a^2*b
*x^(3/2)*sgn(b*x + a) + 2*A*a*b^2*x^(3/2)*sgn(b*x + a) + 2*B*a^3*sqrt(x)*sgn(b*x + a) + 6*A*a^2*b*sqrt(x)*sgn(
b*x + a) - 2*A*a^3*sgn(b*x + a)/sqrt(x)