Optimal. Leaf size=295 \[ \frac {x^2 (a+b x)^{1+n} (c+d x)^{1-n}}{4 b d}+\frac {(a+b x)^{1+n} (c+d x)^{1-n} \left (2 a b c d \left (3-n^2\right )+a^2 d^2 \left (6-5 n+n^2\right )+b^2 c^2 \left (6+5 n+n^2\right )-2 b d (a d (3-n)+b c (3+n)) x\right )}{24 b^3 d^3}-\frac {\left (3 a b^2 c^2 d \left (2+n-2 n^2-n^3\right )+a^3 d^3 \left (6-11 n+6 n^2-n^3\right )+3 a^2 b c d^2 \left (2-n-2 n^2+n^3\right )+b^3 c^3 \left (6+11 n+6 n^2+n^3\right )\right ) (a+b x)^{1+n} (c+d x)^{-n} \left (\frac {b (c+d x)}{b c-a d}\right )^n \, _2F_1\left (n,1+n;2+n;-\frac {d (a+b x)}{b c-a d}\right )}{24 b^4 d^3 (1+n)} \]
[Out]
________________________________________________________________________________________
Rubi [A]
time = 0.16, antiderivative size = 295, normalized size of antiderivative = 1.00, number of steps
used = 4, number of rules used = 4, integrand size = 20, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.200, Rules used = {102, 152, 72,
71} \begin {gather*} \frac {(a+b x)^{n+1} (c+d x)^{1-n} \left (a^2 d^2 \left (n^2-5 n+6\right )+2 a b c d \left (3-n^2\right )-2 b d x (a d (3-n)+b c (n+3))+b^2 c^2 \left (n^2+5 n+6\right )\right )}{24 b^3 d^3}-\frac {(a+b x)^{n+1} (c+d x)^{-n} \left (a^3 d^3 \left (-n^3+6 n^2-11 n+6\right )+3 a^2 b c d^2 \left (n^3-2 n^2-n+2\right )+3 a b^2 c^2 d \left (-n^3-2 n^2+n+2\right )+b^3 c^3 \left (n^3+6 n^2+11 n+6\right )\right ) \left (\frac {b (c+d x)}{b c-a d}\right )^n \, _2F_1\left (n,n+1;n+2;-\frac {d (a+b x)}{b c-a d}\right )}{24 b^4 d^3 (n+1)}+\frac {x^2 (a+b x)^{n+1} (c+d x)^{1-n}}{4 b d} \end {gather*}
Antiderivative was successfully verified.
[In]
[Out]
Rule 71
Rule 72
Rule 102
Rule 152
Rubi steps
\begin {align*} \int x^3 (a+b x)^n (c+d x)^{-n} \, dx &=\frac {x^2 (a+b x)^{1+n} (c+d x)^{1-n}}{4 b d}+\frac {\int x (a+b x)^n (c+d x)^{-n} (-2 a c+(-a d (3-n)-b c (3+n)) x) \, dx}{4 b d}\\ &=\frac {x^2 (a+b x)^{1+n} (c+d x)^{1-n}}{4 b d}+\frac {(a+b x)^{1+n} (c+d x)^{1-n} \left (2 a b c d \left (3-n^2\right )+a^2 d^2 \left (6-5 n+n^2\right )+b^2 c^2 \left (6+5 n+n^2\right )-2 b d (a d (3-n)+b c (3+n)) x\right )}{24 b^3 d^3}-\frac {\left (3 a b^2 c^2 d \left (2+n-2 n^2-n^3\right )+a^3 d^3 \left (6-11 n+6 n^2-n^3\right )+3 a^2 b c d^2 \left (2-n-2 n^2+n^3\right )+b^3 c^3 \left (6+11 n+6 n^2+n^3\right )\right ) \int (a+b x)^n (c+d x)^{-n} \, dx}{24 b^3 d^3}\\ &=\frac {x^2 (a+b x)^{1+n} (c+d x)^{1-n}}{4 b d}+\frac {(a+b x)^{1+n} (c+d x)^{1-n} \left (2 a b c d \left (3-n^2\right )+a^2 d^2 \left (6-5 n+n^2\right )+b^2 c^2 \left (6+5 n+n^2\right )-2 b d (a d (3-n)+b c (3+n)) x\right )}{24 b^3 d^3}-\frac {\left (\left (3 a b^2 c^2 d \left (2+n-2 n^2-n^3\right )+a^3 d^3 \left (6-11 n+6 n^2-n^3\right )+3 a^2 b c d^2 \left (2-n-2 n^2+n^3\right )+b^3 c^3 \left (6+11 n+6 n^2+n^3\right )\right ) (c+d x)^{-n} \left (\frac {b (c+d x)}{b c-a d}\right )^n\right ) \int (a+b x)^n \left (\frac {b c}{b c-a d}+\frac {b d x}{b c-a d}\right )^{-n} \, dx}{24 b^3 d^3}\\ &=\frac {x^2 (a+b x)^{1+n} (c+d x)^{1-n}}{4 b d}+\frac {(a+b x)^{1+n} (c+d x)^{1-n} \left (2 a b c d \left (3-n^2\right )+a^2 d^2 \left (6-5 n+n^2\right )+b^2 c^2 \left (6+5 n+n^2\right )-2 b d (a d (3-n)+b c (3+n)) x\right )}{24 b^3 d^3}-\frac {\left (3 a b^2 c^2 d \left (2+n-2 n^2-n^3\right )+a^3 d^3 \left (6-11 n+6 n^2-n^3\right )+3 a^2 b c d^2 \left (2-n-2 n^2+n^3\right )+b^3 c^3 \left (6+11 n+6 n^2+n^3\right )\right ) (a+b x)^{1+n} (c+d x)^{-n} \left (\frac {b (c+d x)}{b c-a d}\right )^n \, _2F_1\left (n,1+n;2+n;-\frac {d (a+b x)}{b c-a d}\right )}{24 b^4 d^3 (1+n)}\\ \end {align*}
________________________________________________________________________________________
Mathematica [C] Result contains higher order function than in optimal. Order 6 vs. order 5 in
optimal.
time = 0.13, size = 68, normalized size = 0.23 \begin {gather*} \frac {1}{4} x^4 (a+b x)^n \left (\frac {a+b x}{a}\right )^{-n} (c+d x)^{-n} \left (\frac {c+d x}{c}\right )^n F_1\left (4;-n,n;5;-\frac {b x}{a},-\frac {d x}{c}\right ) \end {gather*}
Antiderivative was successfully verified.
[In]
[Out]
________________________________________________________________________________________
Maple [F]
time = 0.02, size = 0, normalized size = 0.00 \[\int x^{3} \left (b x +a \right )^{n} \left (d x +c \right )^{-n}\, dx\]
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Maxima [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Failed to integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Fricas [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {could not integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Sympy [F(-2)]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Exception raised: HeuristicGCDFailed} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Giac [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {could not integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Mupad [F]
time = 0.00, size = -1, normalized size = -0.00 \begin {gather*} \int \frac {x^3\,{\left (a+b\,x\right )}^n}{{\left (c+d\,x\right )}^n} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________