3.177 \(\int \frac{A+B \log (\frac{e (c+d x)}{a+b x})}{a g+b g x} \, dx\)

Optimal. Leaf size=81 \[ -\frac{B \text{PolyLog}\left (2,\frac{b c-a d}{d (a+b x)}+1\right )}{b g}-\frac{\log \left (-\frac{b c-a d}{d (a+b x)}\right ) \left (B \log \left (\frac{e (c+d x)}{a+b x}\right )+A\right )}{b g} \]

[Out]

-((Log[-((b*c - a*d)/(d*(a + b*x)))]*(A + B*Log[(e*(c + d*x))/(a + b*x)]))/(b*g)) - (B*PolyLog[2, 1 + (b*c - a
*d)/(d*(a + b*x))])/(b*g)

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Rubi [A]  time = 0.211494, antiderivative size = 122, normalized size of antiderivative = 1.51, number of steps used = 10, number of rules used = 8, integrand size = 30, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.267, Rules used = {2524, 12, 2418, 2390, 2301, 2394, 2393, 2391} \[ -\frac{B \text{PolyLog}\left (2,-\frac{d (a+b x)}{b c-a d}\right )}{b g}+\frac{\log (a g+b g x) \left (B \log \left (\frac{e (c+d x)}{a+b x}\right )+A\right )}{b g}-\frac{B \log (a g+b g x) \log \left (\frac{b (c+d x)}{b c-a d}\right )}{b g}+\frac{B \log ^2(g (a+b x))}{2 b g} \]

Antiderivative was successfully verified.

[In]

Int[(A + B*Log[(e*(c + d*x))/(a + b*x)])/(a*g + b*g*x),x]

[Out]

(B*Log[g*(a + b*x)]^2)/(2*b*g) - (B*Log[(b*(c + d*x))/(b*c - a*d)]*Log[a*g + b*g*x])/(b*g) + ((A + B*Log[(e*(c
+ d*x))/(a + b*x)])*Log[a*g + b*g*x])/(b*g) - (B*PolyLog[2, -((d*(a + b*x))/(b*c - a*d))])/(b*g)

Rule 2524

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

Rule 12

Int[(a_)*(u_), x_Symbol] :> Dist[a, Int[u, x], x] /; FreeQ[a, x] &&  !MatchQ[u, (b_)*(v_) /; FreeQ[b, x]]

Rule 2418

Int[((a_.) + Log[(c_.)*((d_) + (e_.)*(x_))^(n_.)]*(b_.))^(p_.)*(RFx_), x_Symbol] :> With[{u = ExpandIntegrand[
(a + b*Log[c*(d + e*x)^n])^p, RFx, x]}, Int[u, x] /; SumQ[u]] /; FreeQ[{a, b, c, d, e, n}, x] && RationalFunct
ionQ[RFx, x] && IntegerQ[p]

Rule 2390

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

Rule 2301

Int[((a_.) + Log[(c_.)*(x_)^(n_.)]*(b_.))/(x_), x_Symbol] :> Simp[(a + b*Log[c*x^n])^2/(2*b*n), x] /; FreeQ[{a
, b, c, n}, x]

Rule 2394

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

Rule 2393

Int[((a_.) + Log[(c_.)*((d_) + (e_.)*(x_))]*(b_.))/((f_.) + (g_.)*(x_)), x_Symbol] :> Dist[1/g, Subst[Int[(a +
b*Log[1 + (c*e*x)/g])/x, x], x, f + g*x], x] /; FreeQ[{a, b, c, d, e, f, g}, x] && NeQ[e*f - d*g, 0] && EqQ[g
+ c*(e*f - d*g), 0]

Rule 2391

Int[Log[(c_.)*((d_) + (e_.)*(x_)^(n_.))]/(x_), x_Symbol] :> -Simp[PolyLog[2, -(c*e*x^n)]/n, x] /; FreeQ[{c, d,
e, n}, x] && EqQ[c*d, 1]

Rubi steps

\begin{align*} \int \frac{A+B \log \left (\frac{e (c+d x)}{a+b x}\right )}{a g+b g x} \, dx &=\frac{\left (A+B \log \left (\frac{e (c+d x)}{a+b x}\right )\right ) \log (a g+b g x)}{b g}-\frac{B \int \frac{(a+b x) \left (\frac{d e}{a+b x}-\frac{b e (c+d x)}{(a+b x)^2}\right ) \log (a g+b g x)}{e (c+d x)} \, dx}{b g}\\ &=\frac{\left (A+B \log \left (\frac{e (c+d x)}{a+b x}\right )\right ) \log (a g+b g x)}{b g}-\frac{B \int \frac{(a+b x) \left (\frac{d e}{a+b x}-\frac{b e (c+d x)}{(a+b x)^2}\right ) \log (a g+b g x)}{c+d x} \, dx}{b e g}\\ &=\frac{\left (A+B \log \left (\frac{e (c+d x)}{a+b x}\right )\right ) \log (a g+b g x)}{b g}-\frac{B \int \left (-\frac{b e \log (a g+b g x)}{a+b x}+\frac{d e \log (a g+b g x)}{c+d x}\right ) \, dx}{b e g}\\ &=\frac{\left (A+B \log \left (\frac{e (c+d x)}{a+b x}\right )\right ) \log (a g+b g x)}{b g}+\frac{B \int \frac{\log (a g+b g x)}{a+b x} \, dx}{g}-\frac{(B d) \int \frac{\log (a g+b g x)}{c+d x} \, dx}{b g}\\ &=-\frac{B \log \left (\frac{b (c+d x)}{b c-a d}\right ) \log (a g+b g x)}{b g}+\frac{\left (A+B \log \left (\frac{e (c+d x)}{a+b x}\right )\right ) \log (a g+b g x)}{b g}+B \int \frac{\log \left (\frac{b g (c+d x)}{b c g-a d g}\right )}{a g+b g x} \, dx+\frac{B \operatorname{Subst}\left (\int \frac{g \log (x)}{x} \, dx,x,a g+b g x\right )}{b g^2}\\ &=-\frac{B \log \left (\frac{b (c+d x)}{b c-a d}\right ) \log (a g+b g x)}{b g}+\frac{\left (A+B \log \left (\frac{e (c+d x)}{a+b x}\right )\right ) \log (a g+b g x)}{b g}+\frac{B \operatorname{Subst}\left (\int \frac{\log (x)}{x} \, dx,x,a g+b g x\right )}{b g}+\frac{B \operatorname{Subst}\left (\int \frac{\log \left (1+\frac{d x}{b c g-a d g}\right )}{x} \, dx,x,a g+b g x\right )}{b g}\\ &=\frac{B \log ^2(g (a+b x))}{2 b g}-\frac{B \log \left (\frac{b (c+d x)}{b c-a d}\right ) \log (a g+b g x)}{b g}+\frac{\left (A+B \log \left (\frac{e (c+d x)}{a+b x}\right )\right ) \log (a g+b g x)}{b g}-\frac{B \text{Li}_2\left (-\frac{d (a+b x)}{b c-a d}\right )}{b g}\\ \end{align*}

Mathematica [A]  time = 0.0427005, size = 95, normalized size = 1.17 \[ \frac{\log (g (a+b x)) \left (2 \left (B \log \left (\frac{e (c+d x)}{a+b x}\right )-B \log \left (\frac{b (c+d x)}{b c-a d}\right )+A\right )+B \log (g (a+b x))\right )-2 B \text{PolyLog}\left (2,\frac{d (a+b x)}{a d-b c}\right )}{2 b g} \]

Antiderivative was successfully verified.

[In]

Integrate[(A + B*Log[(e*(c + d*x))/(a + b*x)])/(a*g + b*g*x),x]

[Out]

(Log[g*(a + b*x)]*(B*Log[g*(a + b*x)] + 2*(A - B*Log[(b*(c + d*x))/(b*c - a*d)] + B*Log[(e*(c + d*x))/(a + b*x
)])) - 2*B*PolyLog[2, (d*(a + b*x))/(-(b*c) + a*d)])/(2*b*g)

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Maple [B]  time = 0.057, size = 419, normalized size = 5.2 \begin{align*} -{\frac{Aad}{bg \left ( ad-bc \right ) }\ln \left ( b \left ({\frac{de}{b}}-{\frac{e \left ( ad-bc \right ) }{b \left ( bx+a \right ) }} \right ) -de \right ) }+{\frac{Ac}{g \left ( ad-bc \right ) }\ln \left ( b \left ({\frac{de}{b}}-{\frac{e \left ( ad-bc \right ) }{b \left ( bx+a \right ) }} \right ) -de \right ) }-{\frac{Bad}{bg \left ( ad-bc \right ) }{\it dilog} \left ( -{\frac{1}{de} \left ( b \left ({\frac{de}{b}}-{\frac{e \left ( ad-bc \right ) }{b \left ( bx+a \right ) }} \right ) -de \right ) } \right ) }+{\frac{Bc}{g \left ( ad-bc \right ) }{\it dilog} \left ( -{\frac{1}{de} \left ( b \left ({\frac{de}{b}}-{\frac{e \left ( ad-bc \right ) }{b \left ( bx+a \right ) }} \right ) -de \right ) } \right ) }-{\frac{Bad}{bg \left ( ad-bc \right ) }\ln \left ({\frac{de}{b}}-{\frac{e \left ( ad-bc \right ) }{b \left ( bx+a \right ) }} \right ) \ln \left ( -{\frac{1}{de} \left ( b \left ({\frac{de}{b}}-{\frac{e \left ( ad-bc \right ) }{b \left ( bx+a \right ) }} \right ) -de \right ) } \right ) }+{\frac{Bc}{g \left ( ad-bc \right ) }\ln \left ({\frac{de}{b}}-{\frac{e \left ( ad-bc \right ) }{b \left ( bx+a \right ) }} \right ) \ln \left ( -{\frac{1}{de} \left ( b \left ({\frac{de}{b}}-{\frac{e \left ( ad-bc \right ) }{b \left ( bx+a \right ) }} \right ) -de \right ) } \right ) } \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((A+B*ln(e*(d*x+c)/(b*x+a)))/(b*g*x+a*g),x)

[Out]

-1/b/g/(a*d-b*c)*A*ln(b*(d*e/b-e*(a*d-b*c)/b/(b*x+a))-d*e)*a*d+1/g/(a*d-b*c)*A*ln(b*(d*e/b-e*(a*d-b*c)/b/(b*x+
a))-d*e)*c-1/b/g/(a*d-b*c)*B*dilog(-(b*(d*e/b-e*(a*d-b*c)/b/(b*x+a))-d*e)/d/e)*a*d+1/g/(a*d-b*c)*B*dilog(-(b*(
d*e/b-e*(a*d-b*c)/b/(b*x+a))-d*e)/d/e)*c-1/b/g/(a*d-b*c)*B*ln(d*e/b-e*(a*d-b*c)/b/(b*x+a))*ln(-(b*(d*e/b-e*(a*
d-b*c)/b/(b*x+a))-d*e)/d/e)*a*d+1/g/(a*d-b*c)*B*ln(d*e/b-e*(a*d-b*c)/b/(b*x+a))*ln(-(b*(d*e/b-e*(a*d-b*c)/b/(b
*x+a))-d*e)/d/e)*c

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Maxima [F]  time = 0., size = 0, normalized size = 0. \begin{align*} B{\left (\frac{\log \left (b x + a\right ) \log \left (d x + c\right )}{b g} - \int -\frac{b d x \log \left (e\right ) + b c \log \left (e\right ) -{\left (2 \, b d x + b c + a d\right )} \log \left (b x + a\right )}{b^{2} d g x^{2} + a b c g +{\left (b^{2} c g + a b d g\right )} x}\,{d x}\right )} + \frac{A \log \left (b g x + a g\right )}{b g} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((A+B*log(e*(d*x+c)/(b*x+a)))/(b*g*x+a*g),x, algorithm="maxima")

[Out]

B*(log(b*x + a)*log(d*x + c)/(b*g) - integrate(-(b*d*x*log(e) + b*c*log(e) - (2*b*d*x + b*c + a*d)*log(b*x + a
))/(b^2*d*g*x^2 + a*b*c*g + (b^2*c*g + a*b*d*g)*x), x)) + A*log(b*g*x + a*g)/(b*g)

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Fricas [F]  time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (\frac{B \log \left (\frac{d e x + c e}{b x + a}\right ) + A}{b g x + a g}, x\right ) \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((A+B*log(e*(d*x+c)/(b*x+a)))/(b*g*x+a*g),x, algorithm="fricas")

[Out]

integral((B*log((d*e*x + c*e)/(b*x + a)) + A)/(b*g*x + a*g), x)

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Sympy [F(-1)]  time = 0., size = 0, normalized size = 0. \begin{align*} \text{Timed out} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((A+B*ln(e*(d*x+c)/(b*x+a)))/(b*g*x+a*g),x)

[Out]

Timed out

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Giac [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{B \log \left (\frac{{\left (d x + c\right )} e}{b x + a}\right ) + A}{b g x + a g}\,{d x} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((A+B*log(e*(d*x+c)/(b*x+a)))/(b*g*x+a*g),x, algorithm="giac")

[Out]

integrate((B*log((d*x + c)*e/(b*x + a)) + A)/(b*g*x + a*g), x)