Integrand size = 18, antiderivative size = 164 \[ \int \frac {x^8}{\log \left (c \left (d+e x^3\right )^p\right )} \, dx=\frac {d^2 \left (d+e x^3\right ) \left (c \left (d+e x^3\right )^p\right )^{-1/p} \operatorname {ExpIntegralEi}\left (\frac {\log \left (c \left (d+e x^3\right )^p\right )}{p}\right )}{3 e^3 p}-\frac {2 d \left (d+e x^3\right )^2 \left (c \left (d+e x^3\right )^p\right )^{-2/p} \operatorname {ExpIntegralEi}\left (\frac {2 \log \left (c \left (d+e x^3\right )^p\right )}{p}\right )}{3 e^3 p}+\frac {\left (d+e x^3\right )^3 \left (c \left (d+e x^3\right )^p\right )^{-3/p} \operatorname {ExpIntegralEi}\left (\frac {3 \log \left (c \left (d+e x^3\right )^p\right )}{p}\right )}{3 e^3 p} \] Output:
1/3*d^2*(e*x^3+d)*Ei(ln(c*(e*x^3+d)^p)/p)/e^3/p/((c*(e*x^3+d)^p)^(1/p))-2/ 3*d*(e*x^3+d)^2*Ei(2*ln(c*(e*x^3+d)^p)/p)/e^3/p/((c*(e*x^3+d)^p)^(2/p))+1/ 3*(e*x^3+d)^3*Ei(3*ln(c*(e*x^3+d)^p)/p)/e^3/p/((c*(e*x^3+d)^p)^(3/p))
Time = 0.24 (sec) , antiderivative size = 146, normalized size of antiderivative = 0.89 \[ \int \frac {x^8}{\log \left (c \left (d+e x^3\right )^p\right )} \, dx=\frac {\left (d+e x^3\right ) \left (c \left (d+e x^3\right )^p\right )^{-3/p} \left (d^2 \left (c \left (d+e x^3\right )^p\right )^{2/p} \operatorname {ExpIntegralEi}\left (\frac {\log \left (c \left (d+e x^3\right )^p\right )}{p}\right )-\left (d+e x^3\right ) \left (2 d \left (c \left (d+e x^3\right )^p\right )^{\frac {1}{p}} \operatorname {ExpIntegralEi}\left (\frac {2 \log \left (c \left (d+e x^3\right )^p\right )}{p}\right )-\left (d+e x^3\right ) \operatorname {ExpIntegralEi}\left (\frac {3 \log \left (c \left (d+e x^3\right )^p\right )}{p}\right )\right )\right )}{3 e^3 p} \] Input:
Integrate[x^8/Log[c*(d + e*x^3)^p],x]
Output:
((d + e*x^3)*(d^2*(c*(d + e*x^3)^p)^(2/p)*ExpIntegralEi[Log[c*(d + e*x^3)^ p]/p] - (d + e*x^3)*(2*d*(c*(d + e*x^3)^p)^p^(-1)*ExpIntegralEi[(2*Log[c*( d + e*x^3)^p])/p] - (d + e*x^3)*ExpIntegralEi[(3*Log[c*(d + e*x^3)^p])/p]) ))/(3*e^3*p*(c*(d + e*x^3)^p)^(3/p))
Time = 0.71 (sec) , antiderivative size = 160, normalized size of antiderivative = 0.98, number of steps used = 4, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.167, Rules used = {2904, 2846, 2009}
Below are the steps used by Rubi to obtain the solution. The rule number used for the transformation is given above next to the arrow. The rules definitions used are listed below.
\(\displaystyle \int \frac {x^8}{\log \left (c \left (d+e x^3\right )^p\right )} \, dx\) |
\(\Big \downarrow \) 2904 |
\(\displaystyle \frac {1}{3} \int \frac {x^6}{\log \left (c \left (e x^3+d\right )^p\right )}dx^3\) |
\(\Big \downarrow \) 2846 |
\(\displaystyle \frac {1}{3} \int \left (\frac {d^2}{e^2 \log \left (c \left (e x^3+d\right )^p\right )}-\frac {2 \left (e x^3+d\right ) d}{e^2 \log \left (c \left (e x^3+d\right )^p\right )}+\frac {\left (e x^3+d\right )^2}{e^2 \log \left (c \left (e x^3+d\right )^p\right )}\right )dx^3\) |
\(\Big \downarrow \) 2009 |
\(\displaystyle \frac {1}{3} \left (\frac {d^2 \left (d+e x^3\right ) \left (c \left (d+e x^3\right )^p\right )^{-1/p} \operatorname {ExpIntegralEi}\left (\frac {\log \left (c \left (e x^3+d\right )^p\right )}{p}\right )}{e^3 p}+\frac {\left (d+e x^3\right )^3 \left (c \left (d+e x^3\right )^p\right )^{-3/p} \operatorname {ExpIntegralEi}\left (\frac {3 \log \left (c \left (e x^3+d\right )^p\right )}{p}\right )}{e^3 p}-\frac {2 d \left (d+e x^3\right )^2 \left (c \left (d+e x^3\right )^p\right )^{-2/p} \operatorname {ExpIntegralEi}\left (\frac {2 \log \left (c \left (e x^3+d\right )^p\right )}{p}\right )}{e^3 p}\right )\) |
Input:
Int[x^8/Log[c*(d + e*x^3)^p],x]
Output:
((d^2*(d + e*x^3)*ExpIntegralEi[Log[c*(d + e*x^3)^p]/p])/(e^3*p*(c*(d + e* x^3)^p)^p^(-1)) - (2*d*(d + e*x^3)^2*ExpIntegralEi[(2*Log[c*(d + e*x^3)^p] )/p])/(e^3*p*(c*(d + e*x^3)^p)^(2/p)) + ((d + e*x^3)^3*ExpIntegralEi[(3*Lo g[c*(d + e*x^3)^p])/p])/(e^3*p*(c*(d + e*x^3)^p)^(3/p)))/3
Int[((f_.) + (g_.)*(x_))^(q_.)/((a_.) + Log[(c_.)*((d_) + (e_.)*(x_))^(n_.) ]*(b_.)), x_Symbol] :> Int[ExpandIntegrand[(f + g*x)^q/(a + b*Log[c*(d + e* x)^n]), x], x] /; FreeQ[{a, b, c, d, e, f, g, n}, x] && NeQ[e*f - d*g, 0] & & IGtQ[q, 0]
Int[((a_.) + Log[(c_.)*((d_) + (e_.)*(x_)^(n_))^(p_.)]*(b_.))^(q_.)*(x_)^(m _.), x_Symbol] :> Simp[1/n Subst[Int[x^(Simplify[(m + 1)/n] - 1)*(a + b*L og[c*(d + e*x)^p])^q, x], x, x^n], x] /; FreeQ[{a, b, c, d, e, m, n, p, q}, x] && IntegerQ[Simplify[(m + 1)/n]] && (GtQ[(m + 1)/n, 0] || IGtQ[q, 0]) & & !(EqQ[q, 1] && ILtQ[n, 0] && IGtQ[m, 0])
Result contains higher order function than in optimal. Order 9 vs. order 4.
Time = 1.29 (sec) , antiderivative size = 823, normalized size of antiderivative = 5.02
Input:
int(x^8/ln(c*(e*x^3+d)^p),x,method=_RETURNVERBOSE)
Output:
-1/3/e^3/p*(e*x^3+d)^3*c^(-3/p)*((e*x^3+d)^p)^(-3/p)*exp(3/2*I*Pi*csgn(I*c *(e*x^3+d)^p)*(-csgn(I*c*(e*x^3+d)^p)+csgn(I*c))*(-csgn(I*c*(e*x^3+d)^p)+c sgn(I*(e*x^3+d)^p))/p)*Ei(1,-3*ln(e*x^3+d)-3/2*(I*Pi*csgn(I*(e*x^3+d)^p)*c sgn(I*c*(e*x^3+d)^p)^2-I*Pi*csgn(I*(e*x^3+d)^p)*csgn(I*c*(e*x^3+d)^p)*csgn (I*c)-I*Pi*csgn(I*c*(e*x^3+d)^p)^3+I*Pi*csgn(I*c*(e*x^3+d)^p)^2*csgn(I*c)+ 2*ln(c)+2*ln((e*x^3+d)^p)-2*p*ln(e*x^3+d))/p)-1/3/e^3*d^2/p*(e*x^3+d)*c^(- 1/p)*((e*x^3+d)^p)^(-1/p)*exp(1/2*I*Pi*csgn(I*c*(e*x^3+d)^p)*(-csgn(I*c*(e *x^3+d)^p)+csgn(I*c))*(-csgn(I*c*(e*x^3+d)^p)+csgn(I*(e*x^3+d)^p))/p)*Ei(1 ,-ln(e*x^3+d)-1/2*(I*Pi*csgn(I*(e*x^3+d)^p)*csgn(I*c*(e*x^3+d)^p)^2-I*Pi*c sgn(I*(e*x^3+d)^p)*csgn(I*c*(e*x^3+d)^p)*csgn(I*c)-I*Pi*csgn(I*c*(e*x^3+d) ^p)^3+I*Pi*csgn(I*c*(e*x^3+d)^p)^2*csgn(I*c)+2*ln(c)+2*ln((e*x^3+d)^p)-2*p *ln(e*x^3+d))/p)+2/3/e^3*d/p*(e*x^3+d)^2*c^(-2/p)*((e*x^3+d)^p)^(-2/p)*exp (I*Pi*csgn(I*c*(e*x^3+d)^p)*(-csgn(I*c*(e*x^3+d)^p)+csgn(I*c))*(-csgn(I*c* (e*x^3+d)^p)+csgn(I*(e*x^3+d)^p))/p)*Ei(1,-2*ln(e*x^3+d)-(I*Pi*csgn(I*(e*x ^3+d)^p)*csgn(I*c*(e*x^3+d)^p)^2-I*Pi*csgn(I*(e*x^3+d)^p)*csgn(I*c*(e*x^3+ d)^p)*csgn(I*c)-I*Pi*csgn(I*c*(e*x^3+d)^p)^3+I*Pi*csgn(I*c*(e*x^3+d)^p)^2* csgn(I*c)+2*ln(c)+2*ln((e*x^3+d)^p)-2*p*ln(e*x^3+d))/p)
Time = 0.07 (sec) , antiderivative size = 116, normalized size of antiderivative = 0.71 \[ \int \frac {x^8}{\log \left (c \left (d+e x^3\right )^p\right )} \, dx=\frac {c^{\frac {2}{p}} d^{2} \operatorname {log\_integral}\left ({\left (e x^{3} + d\right )} c^{\left (\frac {1}{p}\right )}\right ) - 2 \, c^{\left (\frac {1}{p}\right )} d \operatorname {log\_integral}\left ({\left (e^{2} x^{6} + 2 \, d e x^{3} + d^{2}\right )} c^{\frac {2}{p}}\right ) + \operatorname {log\_integral}\left ({\left (e^{3} x^{9} + 3 \, d e^{2} x^{6} + 3 \, d^{2} e x^{3} + d^{3}\right )} c^{\frac {3}{p}}\right )}{3 \, c^{\frac {3}{p}} e^{3} p} \] Input:
integrate(x^8/log(c*(e*x^3+d)^p),x, algorithm="fricas")
Output:
1/3*(c^(2/p)*d^2*log_integral((e*x^3 + d)*c^(1/p)) - 2*c^(1/p)*d*log_integ ral((e^2*x^6 + 2*d*e*x^3 + d^2)*c^(2/p)) + log_integral((e^3*x^9 + 3*d*e^2 *x^6 + 3*d^2*e*x^3 + d^3)*c^(3/p)))/(c^(3/p)*e^3*p)
\[ \int \frac {x^8}{\log \left (c \left (d+e x^3\right )^p\right )} \, dx=\int \frac {x^{8}}{\log {\left (c \left (d + e x^{3}\right )^{p} \right )}}\, dx \] Input:
integrate(x**8/ln(c*(e*x**3+d)**p),x)
Output:
Integral(x**8/log(c*(d + e*x**3)**p), x)
\[ \int \frac {x^8}{\log \left (c \left (d+e x^3\right )^p\right )} \, dx=\int { \frac {x^{8}}{\log \left ({\left (e x^{3} + d\right )}^{p} c\right )} \,d x } \] Input:
integrate(x^8/log(c*(e*x^3+d)^p),x, algorithm="maxima")
Output:
integrate(x^8/log((e*x^3 + d)^p*c), x)
Time = 0.13 (sec) , antiderivative size = 108, normalized size of antiderivative = 0.66 \[ \int \frac {x^8}{\log \left (c \left (d+e x^3\right )^p\right )} \, dx=\frac {d^{2} {\rm Ei}\left (\frac {\log \left (c\right )}{p} + \log \left (e x^{3} + d\right )\right )}{3 \, c^{\left (\frac {1}{p}\right )} e^{3} p} - \frac {2 \, d {\rm Ei}\left (\frac {2 \, \log \left (c\right )}{p} + 2 \, \log \left (e x^{3} + d\right )\right )}{3 \, c^{\frac {2}{p}} e^{3} p} + \frac {{\rm Ei}\left (\frac {3 \, \log \left (c\right )}{p} + 3 \, \log \left (e x^{3} + d\right )\right )}{3 \, c^{\frac {3}{p}} e^{3} p} \] Input:
integrate(x^8/log(c*(e*x^3+d)^p),x, algorithm="giac")
Output:
1/3*d^2*Ei(log(c)/p + log(e*x^3 + d))/(c^(1/p)*e^3*p) - 2/3*d*Ei(2*log(c)/ p + 2*log(e*x^3 + d))/(c^(2/p)*e^3*p) + 1/3*Ei(3*log(c)/p + 3*log(e*x^3 + d))/(c^(3/p)*e^3*p)
Timed out. \[ \int \frac {x^8}{\log \left (c \left (d+e x^3\right )^p\right )} \, dx=\int \frac {x^8}{\ln \left (c\,{\left (e\,x^3+d\right )}^p\right )} \,d x \] Input:
int(x^8/log(c*(d + e*x^3)^p),x)
Output:
int(x^8/log(c*(d + e*x^3)^p), x)
\[ \int \frac {x^8}{\log \left (c \left (d+e x^3\right )^p\right )} \, dx=\int \frac {x^{8}}{\mathrm {log}\left (\left (e \,x^{3}+d \right )^{p} c \right )}d x \] Input:
int(x^8/log(c*(e*x^3+d)^p),x)
Output:
int(x**8/log((d + e*x**3)**p*c),x)