3.1004 \(\int \frac {1}{(a+b x) (\frac {a d}{b}+d x)^3} \, dx\)

Optimal. Leaf size=17 \[ -\frac {b^2}{3 d^3 (a+b x)^3} \]

[Out]

-1/3*b^2/d^3/(b*x+a)^3

________________________________________________________________________________________

Rubi [A]  time = 0.00, antiderivative size = 17, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, integrand size = 20, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.100, Rules used = {21, 32} \[ -\frac {b^2}{3 d^3 (a+b x)^3} \]

Antiderivative was successfully verified.

[In]

Int[1/((a + b*x)*((a*d)/b + d*x)^3),x]

[Out]

-b^2/(3*d^3*(a + b*x)^3)

Rule 21

Int[(u_.)*((a_) + (b_.)*(v_))^(m_.)*((c_) + (d_.)*(v_))^(n_.), x_Symbol] :> Dist[(b/d)^m, Int[u*(c + d*v)^(m +
n), x], x] /; FreeQ[{a, b, c, d, n}, x] && EqQ[b*c - a*d, 0] && IntegerQ[m] && ( !IntegerQ[n] || SimplerQ[c +
d*x, a + b*x])

Rule 32

Int[((a_.) + (b_.)*(x_))^(m_), x_Symbol] :> Simp[(a + b*x)^(m + 1)/(b*(m + 1)), x] /; FreeQ[{a, b, m}, x] && N
eQ[m, -1]

Rubi steps

\begin {align*} \int \frac {1}{(a+b x) \left (\frac {a d}{b}+d x\right )^3} \, dx &=\frac {b^3 \int \frac {1}{(a+b x)^4} \, dx}{d^3}\\ &=-\frac {b^2}{3 d^3 (a+b x)^3}\\ \end {align*}

________________________________________________________________________________________

Mathematica [A]  time = 0.01, size = 17, normalized size = 1.00 \[ -\frac {b^2}{3 d^3 (a+b x)^3} \]

Antiderivative was successfully verified.

[In]

Integrate[1/((a + b*x)*((a*d)/b + d*x)^3),x]

[Out]

-1/3*b^2/(d^3*(a + b*x)^3)

________________________________________________________________________________________

fricas [B]  time = 0.41, size = 47, normalized size = 2.76 \[ -\frac {b^{2}}{3 \, {\left (b^{3} d^{3} x^{3} + 3 \, a b^{2} d^{3} x^{2} + 3 \, a^{2} b d^{3} x + a^{3} d^{3}\right )}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/(b*x+a)/(a*d/b+d*x)^3,x, algorithm="fricas")

[Out]

-1/3*b^2/(b^3*d^3*x^3 + 3*a*b^2*d^3*x^2 + 3*a^2*b*d^3*x + a^3*d^3)

________________________________________________________________________________________

giac [A]  time = 1.19, size = 15, normalized size = 0.88 \[ -\frac {b^{2}}{3 \, {\left (b x + a\right )}^{3} d^{3}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/(b*x+a)/(a*d/b+d*x)^3,x, algorithm="giac")

[Out]

-1/3*b^2/((b*x + a)^3*d^3)

________________________________________________________________________________________

maple [A]  time = 0.00, size = 16, normalized size = 0.94 \[ -\frac {b^{2}}{3 \left (b x +a \right )^{3} d^{3}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(1/(b*x+a)/(a*d/b+d*x)^3,x)

[Out]

-1/3*b^2/d^3/(b*x+a)^3

________________________________________________________________________________________

maxima [B]  time = 1.31, size = 47, normalized size = 2.76 \[ -\frac {b^{2}}{3 \, {\left (b^{3} d^{3} x^{3} + 3 \, a b^{2} d^{3} x^{2} + 3 \, a^{2} b d^{3} x + a^{3} d^{3}\right )}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/(b*x+a)/(a*d/b+d*x)^3,x, algorithm="maxima")

[Out]

-1/3*b^2/(b^3*d^3*x^3 + 3*a*b^2*d^3*x^2 + 3*a^2*b*d^3*x + a^3*d^3)

________________________________________________________________________________________

mupad [B]  time = 0.15, size = 49, normalized size = 2.88 \[ -\frac {b^2}{3\,\left (a^3\,d^3+3\,a^2\,b\,d^3\,x+3\,a\,b^2\,d^3\,x^2+b^3\,d^3\,x^3\right )} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(1/((d*x + (a*d)/b)^3*(a + b*x)),x)

[Out]

-b^2/(3*(a^3*d^3 + b^3*d^3*x^3 + 3*a*b^2*d^3*x^2 + 3*a^2*b*d^3*x))

________________________________________________________________________________________

sympy [B]  time = 0.29, size = 53, normalized size = 3.12 \[ - \frac {b^{3}}{3 a^{3} b d^{3} + 9 a^{2} b^{2} d^{3} x + 9 a b^{3} d^{3} x^{2} + 3 b^{4} d^{3} x^{3}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/(b*x+a)/(a*d/b+d*x)**3,x)

[Out]

-b**3/(3*a**3*b*d**3 + 9*a**2*b**2*d**3*x + 9*a*b**3*d**3*x**2 + 3*b**4*d**3*x**3)

________________________________________________________________________________________