3.31.53 \(\int (a+b x)^{-n} (c+d x) (e+f x)^n \, dx\) [3053]

Optimal. Leaf size=135 \[ \frac {d (a+b x)^{1-n} (e+f x)^{1+n}}{2 b f}+\frac {(b (2 c f-d e (1-n))-a d f (1+n)) (a+b x)^{-n} \left (-\frac {f (a+b x)}{b e-a f}\right )^n (e+f x)^{1+n} \, _2F_1\left (n,1+n;2+n;\frac {b (e+f x)}{b e-a f}\right )}{2 b f^2 (1+n)} \]

[Out]

1/2*d*(b*x+a)^(1-n)*(f*x+e)^(1+n)/b/f+1/2*(b*(2*c*f-d*e*(1-n))-a*d*f*(1+n))*(-f*(b*x+a)/(-a*f+b*e))^n*(f*x+e)^
(1+n)*hypergeom([n, 1+n],[2+n],b*(f*x+e)/(-a*f+b*e))/b/f^2/(1+n)/((b*x+a)^n)

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Rubi [A]
time = 0.05, antiderivative size = 134, normalized size of antiderivative = 0.99, number of steps used = 3, number of rules used = 3, integrand size = 22, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.136, Rules used = {81, 72, 71} \begin {gather*} \frac {(a+b x)^{-n} (e+f x)^{n+1} \left (-\frac {f (a+b x)}{b e-a f}\right )^n (-a d f (n+1)+2 b c f-b d e (1-n)) \, _2F_1\left (n,n+1;n+2;\frac {b (e+f x)}{b e-a f}\right )}{2 b f^2 (n+1)}+\frac {d (a+b x)^{1-n} (e+f x)^{n+1}}{2 b f} \end {gather*}

Antiderivative was successfully verified.

[In]

Int[((c + d*x)*(e + f*x)^n)/(a + b*x)^n,x]

[Out]

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

Rule 71

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

Rule 72

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

Rule 81

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

Rubi steps

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

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Mathematica [A]
time = 0.12, size = 108, normalized size = 0.80 \begin {gather*} \frac {(a+b x)^{-n} (e+f x)^{1+n} \left (d f (a+b x)+\frac {(2 b c f+b d e (-1+n)-a d f (1+n)) \left (\frac {f (a+b x)}{-b e+a f}\right )^n \, _2F_1\left (n,1+n;2+n;\frac {b (e+f x)}{b e-a f}\right )}{1+n}\right )}{2 b f^2} \end {gather*}

Antiderivative was successfully verified.

[In]

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

[Out]

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

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Maple [F]
time = 0.01, size = 0, normalized size = 0.00 \[\int \left (d x +c \right ) \left (f x +e \right )^{n} \left (b x +a \right )^{-n}\, dx\]

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

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

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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]

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

[Out]

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

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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]

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

[Out]

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

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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]

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

[Out]

Exception raised: HeuristicGCDFailed >> no luck

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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]

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

[Out]

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

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Mupad [F]
time = 0.00, size = -1, normalized size = -0.01 \begin {gather*} \int \frac {{\left (e+f\,x\right )}^n\,\left (c+d\,x\right )}{{\left (a+b\,x\right )}^n} \,d x \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

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

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