3.1.36 \(\int \frac {a+b \log (c x^n)}{x^2 (d+e x)} \, dx\) [36]

Optimal. Leaf size=74 \[ -\frac {b n}{d x}-\frac {a+b \log \left (c x^n\right )}{d x}+\frac {e \log \left (1+\frac {d}{e x}\right ) \left (a+b \log \left (c x^n\right )\right )}{d^2}-\frac {b e n \text {Li}_2\left (-\frac {d}{e x}\right )}{d^2} \]

[Out]

-b*n/d/x+(-a-b*ln(c*x^n))/d/x+e*ln(1+d/e/x)*(a+b*ln(c*x^n))/d^2-b*e*n*polylog(2,-d/e/x)/d^2

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Rubi [A]
time = 0.08, antiderivative size = 74, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, integrand size = 21, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.190, Rules used = {2380, 2341, 2379, 2438} \begin {gather*} -\frac {b e n \text {PolyLog}\left (2,-\frac {d}{e x}\right )}{d^2}+\frac {e \log \left (\frac {d}{e x}+1\right ) \left (a+b \log \left (c x^n\right )\right )}{d^2}-\frac {a+b \log \left (c x^n\right )}{d x}-\frac {b n}{d x} \end {gather*}

Antiderivative was successfully verified.

[In]

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

[Out]

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

Rule 2341

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

Rule 2379

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

Rule 2380

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

Rule 2438

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

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Mathematica [A]
time = 0.06, size = 88, normalized size = 1.19 \begin {gather*} -\frac {\frac {2 b d n}{x}+\frac {2 d \left (a+b \log \left (c x^n\right )\right )}{x}+\frac {e \left (a+b \log \left (c x^n\right )\right )^2}{b n}-2 e \left (a+b \log \left (c x^n\right )\right ) \log \left (1+\frac {e x}{d}\right )-2 b e n \text {Li}_2\left (-\frac {e x}{d}\right )}{2 d^2} \end {gather*}

Antiderivative was successfully verified.

[In]

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

[Out]

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

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Maple [C] Result contains higher order function than in optimal. Order 9 vs. order 4.
time = 0.11, size = 504, normalized size = 6.81

method	result	size
risch	\(\frac {i b \pi \,\mathrm {csgn}\left (i c \right ) \mathrm {csgn}\left (i c \,x^{n}\right )^{2} e \ln \left (e x +d \right )}{2 d^{2}}-\frac {i b \pi \,\mathrm {csgn}\left (i c \right ) \mathrm {csgn}\left (i c \,x^{n}\right )^{2} e \ln \left (x \right )}{2 d^{2}}+\frac {i b \pi \,\mathrm {csgn}\left (i x^{n}\right ) \mathrm {csgn}\left (i c \,x^{n}\right )^{2} e \ln \left (e x +d \right )}{2 d^{2}}-\frac {b n e \dilog \left (-\frac {e x}{d}\right )}{d^{2}}+\frac {i b \pi \mathrm {csgn}\left (i c \,x^{n}\right )^{3} e \ln \left (x \right )}{2 d^{2}}-\frac {i b \pi \mathrm {csgn}\left (i c \,x^{n}\right )^{3} e \ln \left (e x +d \right )}{2 d^{2}}-\frac {i b \pi \,\mathrm {csgn}\left (i x^{n}\right ) \mathrm {csgn}\left (i c \,x^{n}\right )^{2}}{2 d x}-\frac {i b \pi \,\mathrm {csgn}\left (i c \right ) \mathrm {csgn}\left (i c \,x^{n}\right )^{2}}{2 d x}-\frac {b \ln \left (x^{n}\right )}{d x}-\frac {a}{d x}+\frac {a e \ln \left (e x +d \right )}{d^{2}}-\frac {a e \ln \left (x \right )}{d^{2}}+\frac {i b \pi \,\mathrm {csgn}\left (i c \right ) \mathrm {csgn}\left (i x^{n}\right ) \mathrm {csgn}\left (i c \,x^{n}\right )}{2 d x}-\frac {i b \pi \,\mathrm {csgn}\left (i x^{n}\right ) \mathrm {csgn}\left (i c \,x^{n}\right )^{2} e \ln \left (x \right )}{2 d^{2}}-\frac {b \ln \left (c \right )}{d x}+\frac {i b \pi \mathrm {csgn}\left (i c \,x^{n}\right )^{3}}{2 d x}-\frac {b n e \ln \left (e x +d \right ) \ln \left (-\frac {e x}{d}\right )}{d^{2}}+\frac {i b \pi \,\mathrm {csgn}\left (i c \right ) \mathrm {csgn}\left (i x^{n}\right ) \mathrm {csgn}\left (i c \,x^{n}\right ) e \ln \left (x \right )}{2 d^{2}}-\frac {i b \pi \,\mathrm {csgn}\left (i c \right ) \mathrm {csgn}\left (i x^{n}\right ) \mathrm {csgn}\left (i c \,x^{n}\right ) e \ln \left (e x +d \right )}{2 d^{2}}+\frac {b \ln \left (x^{n}\right ) e \ln \left (e x +d \right )}{d^{2}}-\frac {b \ln \left (x^{n}\right ) e \ln \left (x \right )}{d^{2}}+\frac {b \ln \left (c \right ) e \ln \left (e x +d \right )}{d^{2}}-\frac {b \ln \left (c \right ) e \ln \left (x \right )}{d^{2}}+\frac {b n e \ln \left (x \right )^{2}}{2 d^{2}}-\frac {b n}{d x}\)	\(504\)

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((a+b*ln(c*x^n))/x^2/(e*x+d),x,method=_RETURNVERBOSE)

[Out]

1/2*I*b*Pi*csgn(I*c*x^n)^3*e/d^2*ln(x)+1/2*I*b*Pi*csgn(I*c*x^n)^3/d/x-1/2*I*b*Pi*csgn(I*c*x^n)^3*e/d^2*ln(e*x+
d)+1/2*I*b*Pi*csgn(I*c)*csgn(I*x^n)*csgn(I*c*x^n)*e/d^2*ln(x)-1/2*I*b*Pi*csgn(I*c)*csgn(I*x^n)*csgn(I*c*x^n)*e
/d^2*ln(e*x+d)-1/2*I*b*Pi*csgn(I*x^n)*csgn(I*c*x^n)^2/d/x-b*ln(x^n)/d/x-a/d/x+a*e/d^2*ln(e*x+d)-a*e/d^2*ln(x)-
1/2*I*b*Pi*csgn(I*c)*csgn(I*c*x^n)^2/d/x-b*ln(c)/d/x+1/2*I*b*Pi*csgn(I*c)*csgn(I*c*x^n)^2*e/d^2*ln(e*x+d)-1/2*
I*b*Pi*csgn(I*c)*csgn(I*c*x^n)^2*e/d^2*ln(x)+1/2*I*b*Pi*csgn(I*x^n)*csgn(I*c*x^n)^2*e/d^2*ln(e*x+d)+1/2*I*b*Pi
*csgn(I*c)*csgn(I*x^n)*csgn(I*c*x^n)/d/x-b*n*e/d^2*ln(e*x+d)*ln(-e*x/d)-1/2*I*b*Pi*csgn(I*x^n)*csgn(I*c*x^n)^2
*e/d^2*ln(x)+b*ln(x^n)*e/d^2*ln(e*x+d)-b*ln(x^n)*e/d^2*ln(x)+b*ln(c)*e/d^2*ln(e*x+d)-b*ln(c)*e/d^2*ln(x)-b*n*e
/d^2*dilog(-e*x/d)+1/2*b*n*e/d^2*ln(x)^2-b*n/d/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((a+b*log(c*x^n))/x^2/(e*x+d),x, algorithm="maxima")

[Out]

a*(e*log(x*e + d)/d^2 - e*log(x)/d^2 - 1/(d*x)) + b*integrate((log(c) + log(x^n))/(x^3*e + d*x^2), 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((a+b*log(c*x^n))/x^2/(e*x+d),x, algorithm="fricas")

[Out]

integral((b*log(c*x^n) + a)/(x^3*e + d*x^2), x)

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Sympy [A]
time = 50.18, size = 216, normalized size = 2.92 \begin {gather*} - \frac {a}{d x} + \frac {a e^{2} \left (\begin {cases} \frac {x}{d} & \text {for}\: e = 0 \\\frac {\log {\left (d + e x \right )}}{e} & \text {otherwise} \end {cases}\right )}{d^{2}} - \frac {a e \log {\left (x \right )}}{d^{2}} - \frac {b n}{d x} - \frac {b \log {\left (c x^{n} \right )}}{d x} - \frac {b e^{2} n \left (\begin {cases} \frac {x}{d} & \text {for}\: e = 0 \\\frac {\begin {cases} - \operatorname {Li}_{2}\left (\frac {e x e^{i \pi }}{d}\right ) & \text {for}\: \frac {1}{\left |{x}\right |} < 1 \wedge \left |{x}\right | < 1 \\\log {\left (d \right )} \log {\left (x \right )} - \operatorname {Li}_{2}\left (\frac {e x e^{i \pi }}{d}\right ) & \text {for}\: \left |{x}\right | < 1 \\- \log {\left (d \right )} \log {\left (\frac {1}{x} \right )} - \operatorname {Li}_{2}\left (\frac {e x e^{i \pi }}{d}\right ) & \text {for}\: \frac {1}{\left |{x}\right |} < 1 \\- {G_{2, 2}^{2, 0}\left (\begin {matrix} & 1, 1 \\0, 0 & \end {matrix} \middle | {x} \right )} \log {\left (d \right )} + {G_{2, 2}^{0, 2}\left (\begin {matrix} 1, 1 & \\ & 0, 0 \end {matrix} \middle | {x} \right )} \log {\left (d \right )} - \operatorname {Li}_{2}\left (\frac {e x e^{i \pi }}{d}\right ) & \text {otherwise} \end {cases}}{e} & \text {otherwise} \end {cases}\right )}{d^{2}} + \frac {b e^{2} \left (\begin {cases} \frac {x}{d} & \text {for}\: e = 0 \\\frac {\log {\left (d + e x \right )}}{e} & \text {otherwise} \end {cases}\right ) \log {\left (c x^{n} \right )}}{d^{2}} + \frac {b e n \log {\left (x \right )}^{2}}{2 d^{2}} - \frac {b e \log {\left (x \right )} \log {\left (c x^{n} \right )}}{d^{2}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

-a/(d*x) + a*e**2*Piecewise((x/d, Eq(e, 0)), (log(d + e*x)/e, True))/d**2 - a*e*log(x)/d**2 - b*n/(d*x) - b*lo
g(c*x**n)/(d*x) - b*e**2*n*Piecewise((x/d, Eq(e, 0)), (Piecewise((-polylog(2, e*x*exp_polar(I*pi)/d), (Abs(x)
< 1) & (1/Abs(x) < 1)), (log(d)*log(x) - polylog(2, e*x*exp_polar(I*pi)/d), Abs(x) < 1), (-log(d)*log(1/x) - p
olylog(2, e*x*exp_polar(I*pi)/d), 1/Abs(x) < 1), (-meijerg(((), (1, 1)), ((0, 0), ()), x)*log(d) + meijerg(((1
, 1), ()), ((), (0, 0)), x)*log(d) - polylog(2, e*x*exp_polar(I*pi)/d), True))/e, True))/d**2 + b*e**2*Piecewi
se((x/d, Eq(e, 0)), (log(d + e*x)/e, True))*log(c*x**n)/d**2 + b*e*n*log(x)**2/(2*d**2) - b*e*log(x)*log(c*x**
n)/d**2

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

[Out]

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

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Mupad [F]
time = 0.00, size = -1, normalized size = -0.01 \begin {gather*} \int \frac {a+b\,\ln \left (c\,x^n\right )}{x^2\,\left (d+e\,x\right )} \,d x \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

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

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