3.1878 \(\int (a+b x)^{-2+n} (c+d x)^{1-n} \, dx\)

Optimal. Leaf size=83 \[ -\frac {(b c-a d) (a+b x)^{n-1} (c+d x)^{-n} \left (\frac {b (c+d x)}{b c-a d}\right )^n \, _2F_1\left (n-1,n-1;n;-\frac {d (a+b x)}{b c-a d}\right )}{b^2 (1-n)} \]

[Out]

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

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Rubi [A]  time = 0.03, antiderivative size = 83, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, integrand size = 21, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.095, Rules used = {70, 69} \[ -\frac {(b c-a d) (a+b x)^{n-1} (c+d x)^{-n} \left (\frac {b (c+d x)}{b c-a d}\right )^n \, _2F_1\left (n-1,n-1;n;-\frac {d (a+b x)}{b c-a d}\right )}{b^2 (1-n)} \]

Antiderivative was successfully verified.

[In]

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

[Out]

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

Rule 69

Int[((a_) + (b_.)*(x_))^(m_)*((c_) + (d_.)*(x_))^(n_), x_Symbol] :> Simp[((a + b*x)^(m + 1)*Hypergeometric2F1[
-n, m + 1, m + 2, -((d*(a + b*x))/(b*c - a*d))])/(b*(m + 1)*(b/(b*c - a*d))^n), 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 70

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])

Rubi steps

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

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Mathematica [A]  time = 0.06, size = 75, normalized size = 0.90 \[ \frac {(a+b x)^{n-1} (c+d x)^{1-n} \left (\frac {b (c+d x)}{b c-a d}\right )^{n-1} \, _2F_1\left (n-1,n-1;n;\frac {d (a+b x)}{a d-b c}\right )}{b (n-1)} \]

Antiderivative was successfully verified.

[In]

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

[Out]

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

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fricas [F]  time = 0.57, size = 0, normalized size = 0.00 \[ {\rm integral}\left ({\left (b x + a\right )}^{n - 2} {\left (d x + c\right )}^{-n + 1}, x\right ) \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b*x+a)^(-2+n)*(d*x+c)^(1-n),x, algorithm="fricas")

[Out]

integral((b*x + a)^(n - 2)*(d*x + c)^(-n + 1), x)

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giac [F]  time = 0.00, size = 0, normalized size = 0.00 \[ \int {\left (b x + a\right )}^{n - 2} {\left (d x + c\right )}^{-n + 1}\,{d x} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b*x+a)^(-2+n)*(d*x+c)^(1-n),x, algorithm="giac")

[Out]

integrate((b*x + a)^(n - 2)*(d*x + c)^(-n + 1), x)

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maple [F]  time = 0.10, size = 0, normalized size = 0.00 \[ \int \left (b x +a \right )^{n -2} \left (d x +c \right )^{-n +1}\, dx \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((b*x+a)^(n-2)*(d*x+c)^(1-n),x)

[Out]

int((b*x+a)^(n-2)*(d*x+c)^(1-n),x)

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maxima [F]  time = 0.00, size = 0, normalized size = 0.00 \[ \int {\left (b x + a\right )}^{n - 2} {\left (d x + c\right )}^{-n + 1}\,{d x} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b*x+a)^(-2+n)*(d*x+c)^(1-n),x, algorithm="maxima")

[Out]

integrate((b*x + a)^(n - 2)*(d*x + c)^(-n + 1), x)

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mupad [F]  time = 0.00, size = -1, normalized size = -0.01 \[ \int {\left (a+b\,x\right )}^{n-2}\,{\left (c+d\,x\right )}^{1-n} \,d x \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((a + b*x)^(n - 2)*(c + d*x)^(1 - n),x)

[Out]

int((a + b*x)^(n - 2)*(c + d*x)^(1 - n), x)

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sympy [F(-2)]  time = 0.00, size = 0, normalized size = 0.00 \[ \text {Exception raised: HeuristicGCDFailed} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b*x+a)**(-2+n)*(d*x+c)**(1-n),x)

[Out]

Exception raised: HeuristicGCDFailed

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