3.182 \(\int \frac {(a+b \log (c x))^p}{x^4} \, dx\)

Optimal. Leaf size=63 \[ c^3 \left (-3^{-p-1}\right ) e^{\frac {3 a}{b}} (a+b \log (c x))^p \left (\frac {a+b \log (c x)}{b}\right )^{-p} \Gamma \left (p+1,\frac {3 (a+b \log (c x))}{b}\right ) \]

[Out]

-3^(-1-p)*c^3*exp(3*a/b)*GAMMA(1+p,3*(a+b*ln(c*x))/b)*(a+b*ln(c*x))^p/(((a+b*ln(c*x))/b)^p)

________________________________________________________________________________________

Rubi [A]  time = 0.05, antiderivative size = 63, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, integrand size = 14, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.143, Rules used = {2309, 2181} \[ c^3 \left (-3^{-p-1}\right ) e^{\frac {3 a}{b}} (a+b \log (c x))^p \left (\frac {a+b \log (c x)}{b}\right )^{-p} \text {Gamma}\left (p+1,\frac {3 (a+b \log (c x))}{b}\right ) \]

Antiderivative was successfully verified.

[In]

Int[(a + b*Log[c*x])^p/x^4,x]

[Out]

-((3^(-1 - p)*c^3*E^((3*a)/b)*Gamma[1 + p, (3*(a + b*Log[c*x]))/b]*(a + b*Log[c*x])^p)/((a + b*Log[c*x])/b)^p)

Rule 2181

Int[(F_)^((g_.)*((e_.) + (f_.)*(x_)))*((c_.) + (d_.)*(x_))^(m_), x_Symbol] :> -Simp[(F^(g*(e - (c*f)/d))*(c +
d*x)^FracPart[m]*Gamma[m + 1, (-((f*g*Log[F])/d))*(c + d*x)])/(d*(-((f*g*Log[F])/d))^(IntPart[m] + 1)*(-((f*g*
Log[F]*(c + d*x))/d))^FracPart[m]), x] /; FreeQ[{F, c, d, e, f, g, m}, x] &&  !IntegerQ[m]

Rule 2309

Int[((a_.) + Log[(c_.)*(x_)]*(b_.))^(p_)*(x_)^(m_.), x_Symbol] :> Dist[1/c^(m + 1), Subst[Int[E^((m + 1)*x)*(a
+ b*x)^p, x], x, Log[c*x]], x] /; FreeQ[{a, b, c, p}, x] && IntegerQ[m]

Rubi steps

\begin {align*} \int \frac {(a+b \log (c x))^p}{x^4} \, dx &=c^3 \operatorname {Subst}\left (\int e^{-3 x} (a+b x)^p \, dx,x,\log (c x)\right )\\ &=-3^{-1-p} c^3 e^{\frac {3 a}{b}} \Gamma \left (1+p,\frac {3 (a+b \log (c x))}{b}\right ) (a+b \log (c x))^p \left (\frac {a+b \log (c x)}{b}\right )^{-p}\\ \end {align*}

________________________________________________________________________________________

Mathematica [A]  time = 0.04, size = 63, normalized size = 1.00 \[ c^3 \left (-3^{-p-1}\right ) e^{\frac {3 a}{b}} (a+b \log (c x))^p \left (\frac {a+b \log (c x)}{b}\right )^{-p} \Gamma \left (p+1,\frac {3 (a+b \log (c x))}{b}\right ) \]

Antiderivative was successfully verified.

[In]

Integrate[(a + b*Log[c*x])^p/x^4,x]

[Out]

-((3^(-1 - p)*c^3*E^((3*a)/b)*Gamma[1 + p, (3*(a + b*Log[c*x]))/b]*(a + b*Log[c*x])^p)/((a + b*Log[c*x])/b)^p)

________________________________________________________________________________________

fricas [F]  time = 0.46, size = 0, normalized size = 0.00 \[ {\rm integral}\left (\frac {{\left (b \log \left (c x\right ) + a\right )}^{p}}{x^{4}}, x\right ) \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a+b*log(c*x))^p/x^4,x, algorithm="fricas")

[Out]

integral((b*log(c*x) + a)^p/x^4, x)

________________________________________________________________________________________

giac [F]  time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {{\left (b \log \left (c x\right ) + a\right )}^{p}}{x^{4}}\,{d x} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a+b*log(c*x))^p/x^4,x, algorithm="giac")

[Out]

integrate((b*log(c*x) + a)^p/x^4, x)

________________________________________________________________________________________

maple [F]  time = 0.04, size = 0, normalized size = 0.00 \[ \int \frac {\left (b \ln \left (c x \right )+a \right )^{p}}{x^{4}}\, dx \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((b*ln(c*x)+a)^p/x^4,x)

[Out]

int((b*ln(c*x)+a)^p/x^4,x)

________________________________________________________________________________________

maxima [A]  time = 0.69, size = 44, normalized size = 0.70 \[ -\frac {{\left (b \log \left (c x\right ) + a\right )}^{p + 1} c^{3} e^{\left (\frac {3 \, a}{b}\right )} E_{-p}\left (\frac {3 \, {\left (b \log \left (c x\right ) + a\right )}}{b}\right )}{b} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a+b*log(c*x))^p/x^4,x, algorithm="maxima")

[Out]

-(b*log(c*x) + a)^(p + 1)*c^3*e^(3*a/b)*exp_integral_e(-p, 3*(b*log(c*x) + a)/b)/b

________________________________________________________________________________________

mupad [F]  time = 0.00, size = -1, normalized size = -0.02 \[ \int \frac {{\left (a+b\,\ln \left (c\,x\right )\right )}^p}{x^4} \,d x \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((a + b*log(c*x))^p/x^4,x)

[Out]

int((a + b*log(c*x))^p/x^4, x)

________________________________________________________________________________________

sympy [F]  time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {\left (a + b \log {\left (c x \right )}\right )^{p}}{x^{4}}\, dx \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a+b*ln(c*x))**p/x**4,x)

[Out]

Integral((a + b*log(c*x))**p/x**4, x)

________________________________________________________________________________________