3.293 \(\int \frac {(a+\frac {b}{x})^n x^2}{(c+d x)^2} \, dx\)

Optimal. Leaf size=202 \[ -\frac {\left (a+\frac {b}{x}\right )^{n+1} (2 a c-b d n) \, _2F_1\left (1,n+1;n+2;\frac {b}{a x}+1\right )}{a^2 d^3 (n+1)}+\frac {c^2 \left (a+\frac {b}{x}\right )^{n+1} (2 a c-b d (2-n)) \, _2F_1\left (1,n+1;n+2;\frac {c \left (a+\frac {b}{x}\right )}{a c-b d}\right )}{d^3 (n+1) (a c-b d)^2}+\frac {c (2 a c-b d) \left (a+\frac {b}{x}\right )^{n+1}}{a d^2 \left (\frac {c}{x}+d\right ) (a c-b d)}+\frac {x \left (a+\frac {b}{x}\right )^{n+1}}{a d \left (\frac {c}{x}+d\right )} \]

[Out]

c*(2*a*c-b*d)*(a+b/x)^(1+n)/a/d^2/(a*c-b*d)/(d+c/x)+(a+b/x)^(1+n)*x/a/d/(d+c/x)+c^2*(2*a*c-b*d*(2-n))*(a+b/x)^
(1+n)*hypergeom([1, 1+n],[2+n],c*(a+b/x)/(a*c-b*d))/d^3/(a*c-b*d)^2/(1+n)-(-b*d*n+2*a*c)*(a+b/x)^(1+n)*hyperge
om([1, 1+n],[2+n],1+b/a/x)/a^2/d^3/(1+n)

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Rubi [A]  time = 0.24, antiderivative size = 202, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 7, integrand size = 20, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.350, Rules used = {514, 375, 103, 151, 156, 65, 68} \[ -\frac {\left (a+\frac {b}{x}\right )^{n+1} (2 a c-b d n) \, _2F_1\left (1,n+1;n+2;\frac {b}{a x}+1\right )}{a^2 d^3 (n+1)}+\frac {c^2 \left (a+\frac {b}{x}\right )^{n+1} (2 a c-b d (2-n)) \, _2F_1\left (1,n+1;n+2;\frac {c \left (a+\frac {b}{x}\right )}{a c-b d}\right )}{d^3 (n+1) (a c-b d)^2}+\frac {c (2 a c-b d) \left (a+\frac {b}{x}\right )^{n+1}}{a d^2 \left (\frac {c}{x}+d\right ) (a c-b d)}+\frac {x \left (a+\frac {b}{x}\right )^{n+1}}{a d \left (\frac {c}{x}+d\right )} \]

Antiderivative was successfully verified.

[In]

Int[((a + b/x)^n*x^2)/(c + d*x)^2,x]

[Out]

(c*(2*a*c - b*d)*(a + b/x)^(1 + n))/(a*d^2*(a*c - b*d)*(d + c/x)) + ((a + b/x)^(1 + n)*x)/(a*d*(d + c/x)) + (c
^2*(2*a*c - b*d*(2 - n))*(a + b/x)^(1 + n)*Hypergeometric2F1[1, 1 + n, 2 + n, (c*(a + b/x))/(a*c - b*d)])/(d^3
*(a*c - b*d)^2*(1 + n)) - ((2*a*c - b*d*n)*(a + b/x)^(1 + n)*Hypergeometric2F1[1, 1 + n, 2 + n, 1 + b/(a*x)])/
(a^2*d^3*(1 + n))

Rule 65

Int[((b_.)*(x_))^(m_)*((c_) + (d_.)*(x_))^(n_), x_Symbol] :> Simp[((c + d*x)^(n + 1)*Hypergeometric2F1[-m, n +
1, n + 2, 1 + (d*x)/c])/(d*(n + 1)*(-(d/(b*c)))^m), x] /; FreeQ[{b, c, d, m, n}, x] &&  !IntegerQ[n] && (Inte
gerQ[m] || GtQ[-(d/(b*c)), 0])

Rule 68

Int[((a_) + (b_.)*(x_))^(m_)*((c_) + (d_.)*(x_))^(n_), x_Symbol] :> Simp[((b*c - a*d)^n*(a + b*x)^(m + 1)*Hype
rgeometric2F1[-n, m + 1, m + 2, -((d*(a + b*x))/(b*c - a*d))])/(b^(n + 1)*(m + 1)), x] /; FreeQ[{a, b, c, d, m
}, x] && NeQ[b*c - a*d, 0] &&  !IntegerQ[m] && IntegerQ[n]

Rule 103

Int[((a_.) + (b_.)*(x_))^(m_)*((c_.) + (d_.)*(x_))^(n_.)*((e_.) + (f_.)*(x_))^(p_.), x_Symbol] :> Simp[(b*(a +
b*x)^(m + 1)*(c + d*x)^(n + 1)*(e + f*x)^(p + 1))/((m + 1)*(b*c - a*d)*(b*e - a*f)), x] + Dist[1/((m + 1)*(b*
c - a*d)*(b*e - a*f)), Int[(a + b*x)^(m + 1)*(c + d*x)^n*(e + f*x)^p*Simp[a*d*f*(m + 1) - b*(d*e*(m + n + 2) +
c*f*(m + p + 2)) - b*d*f*(m + n + p + 3)*x, x], x], x] /; FreeQ[{a, b, c, d, e, f, n, p}, x] && LtQ[m, -1] &&
IntegerQ[m] && (IntegerQ[n] || IntegersQ[2*n, 2*p])

Rule 151

Int[((a_.) + (b_.)*(x_))^(m_)*((c_.) + (d_.)*(x_))^(n_)*((e_.) + (f_.)*(x_))^(p_)*((g_.) + (h_.)*(x_)), x_Symb
ol] :> Simp[((b*g - a*h)*(a + b*x)^(m + 1)*(c + d*x)^(n + 1)*(e + f*x)^(p + 1))/((m + 1)*(b*c - a*d)*(b*e - a*
f)), x] + Dist[1/((m + 1)*(b*c - a*d)*(b*e - a*f)), Int[(a + b*x)^(m + 1)*(c + d*x)^n*(e + f*x)^p*Simp[(a*d*f*
g - b*(d*e + c*f)*g + b*c*e*h)*(m + 1) - (b*g - a*h)*(d*e*(n + 1) + c*f*(p + 1)) - d*f*(b*g - a*h)*(m + n + p
+ 3)*x, x], x], x] /; FreeQ[{a, b, c, d, e, f, g, h, n, p}, x] && LtQ[m, -1] && IntegerQ[m]

Rule 156

Int[(((e_.) + (f_.)*(x_))^(p_)*((g_.) + (h_.)*(x_)))/(((a_.) + (b_.)*(x_))*((c_.) + (d_.)*(x_))), x_Symbol] :>
Dist[(b*g - a*h)/(b*c - a*d), Int[(e + f*x)^p/(a + b*x), x], x] - Dist[(d*g - c*h)/(b*c - a*d), Int[(e + f*x)
^p/(c + d*x), x], x] /; FreeQ[{a, b, c, d, e, f, g, h}, x]

Rule 375

Int[((a_) + (b_.)*(x_)^(n_))^(p_.)*((c_) + (d_.)*(x_)^(n_))^(q_.), x_Symbol] :> -Subst[Int[((a + b/x^n)^p*(c +
d/x^n)^q)/x^2, x], x, 1/x] /; FreeQ[{a, b, c, d, p, q}, x] && NeQ[b*c - a*d, 0] && ILtQ[n, 0]

Rule 514

Int[(x_)^(m_.)*((c_) + (d_.)*(x_)^(mn_.))^(q_.)*((a_) + (b_.)*(x_)^(n_.))^(p_.), x_Symbol] :> Int[x^(m - n*q)*
(a + b*x^n)^p*(d + c*x^n)^q, x] /; FreeQ[{a, b, c, d, m, n, p}, x] && EqQ[mn, -n] && IntegerQ[q] && (PosQ[n] |
|  !IntegerQ[p])

Rubi steps

\begin {align*} \int \frac {\left (a+\frac {b}{x}\right )^n x^2}{(c+d x)^2} \, dx &=\int \frac {\left (a+\frac {b}{x}\right )^n}{\left (d+\frac {c}{x}\right )^2} \, dx\\ &=-\operatorname {Subst}\left (\int \frac {(a+b x)^n}{x^2 (d+c x)^2} \, dx,x,\frac {1}{x}\right )\\ &=\frac {\left (a+\frac {b}{x}\right )^{1+n} x}{a d \left (d+\frac {c}{x}\right )}+\frac {\operatorname {Subst}\left (\int \frac {(a+b x)^n (2 a c-b d n+b c (1-n) x)}{x (d+c x)^2} \, dx,x,\frac {1}{x}\right )}{a d}\\ &=\frac {c (2 a c-b d) \left (a+\frac {b}{x}\right )^{1+n}}{a d^2 (a c-b d) \left (d+\frac {c}{x}\right )}+\frac {\left (a+\frac {b}{x}\right )^{1+n} x}{a d \left (d+\frac {c}{x}\right )}+\frac {\operatorname {Subst}\left (\int \frac {(a+b x)^n ((a c-b d) (2 a c-b d n)-b c (2 a c-b d) n x)}{x (d+c x)} \, dx,x,\frac {1}{x}\right )}{a d^2 (a c-b d)}\\ &=\frac {c (2 a c-b d) \left (a+\frac {b}{x}\right )^{1+n}}{a d^2 (a c-b d) \left (d+\frac {c}{x}\right )}+\frac {\left (a+\frac {b}{x}\right )^{1+n} x}{a d \left (d+\frac {c}{x}\right )}-\frac {\left (c^2 (2 a c-b d (2-n))\right ) \operatorname {Subst}\left (\int \frac {(a+b x)^n}{d+c x} \, dx,x,\frac {1}{x}\right )}{d^3 (a c-b d)}+\frac {(2 a c-b d n) \operatorname {Subst}\left (\int \frac {(a+b x)^n}{x} \, dx,x,\frac {1}{x}\right )}{a d^3}\\ &=\frac {c (2 a c-b d) \left (a+\frac {b}{x}\right )^{1+n}}{a d^2 (a c-b d) \left (d+\frac {c}{x}\right )}+\frac {\left (a+\frac {b}{x}\right )^{1+n} x}{a d \left (d+\frac {c}{x}\right )}+\frac {c^2 (2 a c-b d (2-n)) \left (a+\frac {b}{x}\right )^{1+n} \, _2F_1\left (1,1+n;2+n;\frac {c \left (a+\frac {b}{x}\right )}{a c-b d}\right )}{d^3 (a c-b d)^2 (1+n)}-\frac {(2 a c-b d n) \left (a+\frac {b}{x}\right )^{1+n} \, _2F_1\left (1,1+n;2+n;1+\frac {b}{a x}\right )}{a^2 d^3 (1+n)}\\ \end {align*}

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Mathematica [A]  time = 0.24, size = 179, normalized size = 0.89 \[ \frac {\left (a+\frac {b}{x}\right )^{n+1} \left ((c+d x) \left (a^2 c^2 (2 a c+b d (n-2)) \, _2F_1\left (1,n+1;n+2;\frac {c \left (a+\frac {b}{x}\right )}{a c-b d}\right )-(a c-b d)^2 (2 a c-b d n) \, _2F_1\left (1,n+1;n+2;\frac {b}{a x}+1\right )\right )+a d^2 (n+1) x^2 (a c-b d)^2+a c d (n+1) x (a c-b d) (2 a c-b d)\right )}{a^2 d^3 (n+1) (c+d x) (a c-b d)^2} \]

Antiderivative was successfully verified.

[In]

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

[Out]

((a + b/x)^(1 + n)*(a*c*d*(a*c - b*d)*(2*a*c - b*d)*(1 + n)*x + a*d^2*(a*c - b*d)^2*(1 + n)*x^2 + (c + d*x)*(a
^2*c^2*(2*a*c + b*d*(-2 + n))*Hypergeometric2F1[1, 1 + n, 2 + n, (c*(a + b/x))/(a*c - b*d)] - (a*c - b*d)^2*(2
*a*c - b*d*n)*Hypergeometric2F1[1, 1 + n, 2 + n, 1 + b/(a*x)])))/(a^2*d^3*(a*c - b*d)^2*(1 + n)*(c + d*x))

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fricas [F]  time = 0.82, size = 0, normalized size = 0.00 \[ {\rm integral}\left (\frac {x^{2} \left (\frac {a x + b}{x}\right )^{n}}{d^{2} x^{2} + 2 \, c d x + c^{2}}, x\right ) \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

integral(x^2*((a*x + b)/x)^n/(d^2*x^2 + 2*c*d*x + c^2), x)

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giac [F]  time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {{\left (a + \frac {b}{x}\right )}^{n} x^{2}}{{\left (d x + c\right )}^{2}}\,{d x} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

integrate((a + b/x)^n*x^2/(d*x + c)^2, x)

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maple [F]  time = 0.53, size = 0, normalized size = 0.00 \[ \int \frac {x^{2} \left (a +\frac {b}{x}\right )^{n}}{\left (d x +c \right )^{2}}\, dx \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

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

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maxima [F]  time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {{\left (a + \frac {b}{x}\right )}^{n} x^{2}}{{\left (d x + c\right )}^{2}}\,{d x} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

integrate((a + b/x)^n*x^2/(d*x + c)^2, x)

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mupad [F]  time = 0.00, size = -1, normalized size = -0.00 \[ \int \frac {x^2\,{\left (a+\frac {b}{x}\right )}^n}{{\left (c+d\,x\right )}^2} \,d x \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((x^2*(a + b/x)^n)/(c + d*x)^2,x)

[Out]

int((x^2*(a + b/x)^n)/(c + d*x)^2, x)

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sympy [F]  time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {x^{2} \left (a + \frac {b}{x}\right )^{n}}{\left (c + d x\right )^{2}}\, dx \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

Integral(x**2*(a + b/x)**n/(c + d*x)**2, x)

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