Integrand size = 11, antiderivative size = 74 \[ \int \frac {\operatorname {PolyLog}\left (2,a x^2\right )}{x^7} \, dx=-\frac {a}{36 x^4}-\frac {a^2}{18 x^2}+\frac {1}{9} a^3 \log (x)-\frac {1}{18} a^3 \log \left (1-a x^2\right )+\frac {\log \left (1-a x^2\right )}{18 x^6}-\frac {\operatorname {PolyLog}\left (2,a x^2\right )}{6 x^6} \] Output:
-1/36*a/x^4-1/18*a^2/x^2+1/9*a^3*ln(x)-1/18*a^3*ln(-a*x^2+1)+1/18*ln(-a*x^ 2+1)/x^6-1/6*polylog(2,a*x^2)/x^6
Time = 0.03 (sec) , antiderivative size = 68, normalized size of antiderivative = 0.92 \[ \int \frac {\operatorname {PolyLog}\left (2,a x^2\right )}{x^7} \, dx=-\frac {a x^2+2 a^2 x^4-4 a^3 x^6 \log (x)-2 \log \left (1-a x^2\right )+2 a^3 x^6 \log \left (1-a x^2\right )+6 \operatorname {PolyLog}\left (2,a x^2\right )}{36 x^6} \] Input:
Integrate[PolyLog[2, a*x^2]/x^7,x]
Output:
-1/36*(a*x^2 + 2*a^2*x^4 - 4*a^3*x^6*Log[x] - 2*Log[1 - a*x^2] + 2*a^3*x^6 *Log[1 - a*x^2] + 6*PolyLog[2, a*x^2])/x^6
Time = 0.31 (sec) , antiderivative size = 77, normalized size of antiderivative = 1.04, number of steps used = 7, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.545, Rules used = {7145, 25, 2904, 2842, 54, 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.
\(\displaystyle \int \frac {\operatorname {PolyLog}\left (2,a x^2\right )}{x^7} \, dx\) |
\(\Big \downarrow \) 7145 |
\(\displaystyle \frac {1}{3} \int -\frac {\log \left (1-a x^2\right )}{x^7}dx-\frac {\operatorname {PolyLog}\left (2,a x^2\right )}{6 x^6}\) |
\(\Big \downarrow \) 25 |
\(\displaystyle -\frac {1}{3} \int \frac {\log \left (1-a x^2\right )}{x^7}dx-\frac {\operatorname {PolyLog}\left (2,a x^2\right )}{6 x^6}\) |
\(\Big \downarrow \) 2904 |
\(\displaystyle -\frac {1}{6} \int \frac {\log \left (1-a x^2\right )}{x^8}dx^2-\frac {\operatorname {PolyLog}\left (2,a x^2\right )}{6 x^6}\) |
\(\Big \downarrow \) 2842 |
\(\displaystyle \frac {1}{6} \left (\frac {1}{3} a \int \frac {1}{x^6 \left (1-a x^2\right )}dx^2+\frac {\log \left (1-a x^2\right )}{3 x^6}\right )-\frac {\operatorname {PolyLog}\left (2,a x^2\right )}{6 x^6}\) |
\(\Big \downarrow \) 54 |
\(\displaystyle \frac {1}{6} \left (\frac {1}{3} a \int \left (-\frac {a^3}{a x^2-1}+\frac {a^2}{x^2}+\frac {a}{x^4}+\frac {1}{x^6}\right )dx^2+\frac {\log \left (1-a x^2\right )}{3 x^6}\right )-\frac {\operatorname {PolyLog}\left (2,a x^2\right )}{6 x^6}\) |
\(\Big \downarrow \) 2009 |
\(\displaystyle \frac {1}{6} \left (\frac {1}{3} a \left (a^2 \log \left (x^2\right )-a^2 \log \left (1-a x^2\right )-\frac {a}{x^2}-\frac {1}{2 x^4}\right )+\frac {\log \left (1-a x^2\right )}{3 x^6}\right )-\frac {\operatorname {PolyLog}\left (2,a x^2\right )}{6 x^6}\) |
Input:
Int[PolyLog[2, a*x^2]/x^7,x]
Output:
(Log[1 - a*x^2]/(3*x^6) + (a*(-1/2*1/x^4 - a/x^2 + a^2*Log[x^2] - a^2*Log[ 1 - a*x^2]))/3)/6 - PolyLog[2, a*x^2]/(6*x^6)
Int[((a_) + (b_.)*(x_))^(m_)*((c_.) + (d_.)*(x_))^(n_.), x_Symbol] :> Int[E xpandIntegrand[(a + b*x)^m*(c + d*x)^n, x], x] /; FreeQ[{a, b, c, d}, x] && ILtQ[m, 0] && IntegerQ[n] && !(IGtQ[n, 0] && LtQ[m + n + 2, 0])
Int[((a_.) + Log[(c_.)*((d_) + (e_.)*(x_))^(n_.)]*(b_.))*((f_.) + (g_.)*(x_ ))^(q_.), x_Symbol] :> Simp[(f + g*x)^(q + 1)*((a + b*Log[c*(d + e*x)^n])/( g*(q + 1))), x] - Simp[b*e*(n/(g*(q + 1))) Int[(f + g*x)^(q + 1)/(d + e*x ), x], x] /; FreeQ[{a, b, c, d, e, f, g, n, q}, x] && NeQ[e*f - d*g, 0] && NeQ[q, -1]
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])
Int[((d_.)*(x_))^(m_.)*PolyLog[n_, (a_.)*((b_.)*(x_)^(p_.))^(q_.)], x_Symbo l] :> Simp[(d*x)^(m + 1)*(PolyLog[n, a*(b*x^p)^q]/(d*(m + 1))), x] - Simp[p *(q/(m + 1)) Int[(d*x)^m*PolyLog[n - 1, a*(b*x^p)^q], x], x] /; FreeQ[{a, b, d, m, p, q}, x] && NeQ[m, -1] && GtQ[n, 0]
Time = 1.20 (sec) , antiderivative size = 62, normalized size of antiderivative = 0.84
method | result | size |
default | \(-\frac {\operatorname {polylog}\left (2, a \,x^{2}\right )}{6 x^{6}}+\frac {\ln \left (-a \,x^{2}+1\right )}{18 x^{6}}+\frac {a \left (-\frac {1}{4 x^{4}}-\frac {a}{2 x^{2}}+a^{2} \ln \left (x \right )-\frac {a^{2} \ln \left (a \,x^{2}-1\right )}{2}\right )}{9}\) | \(62\) |
parts | \(-\frac {\operatorname {polylog}\left (2, a \,x^{2}\right )}{6 x^{6}}+\frac {\ln \left (-a \,x^{2}+1\right )}{18 x^{6}}+\frac {a \left (-\frac {1}{4 x^{4}}-\frac {a}{2 x^{2}}+a^{2} \ln \left (x \right )-\frac {a^{2} \ln \left (a \,x^{2}-1\right )}{2}\right )}{9}\) | \(62\) |
parallelrisch | \(\frac {4 a^{3} \ln \left (x \right ) x^{6}-2 \ln \left (-a \,x^{2}+1\right ) x^{6} a^{3}-2 a^{3} x^{6}-2 a^{2} x^{4}-a \,x^{2}-6 \operatorname {polylog}\left (2, a \,x^{2}\right )+2 \ln \left (-a \,x^{2}+1\right )}{36 x^{6}}\) | \(76\) |
meijerg | \(\frac {a^{3} \left (-\frac {1}{2 x^{4} a^{2}}-\frac {1}{4 a \,x^{2}}-\frac {2}{27}+\frac {2 \ln \left (x \right )}{9}+\frac {\ln \left (-a \right )}{9}+\frac {32 a^{2} x^{4}+60 a \,x^{2}+192}{432 a^{2} x^{4}}+\frac {\left (-16 a^{3} x^{6}+16\right ) \ln \left (-a \,x^{2}+1\right )}{144 a^{3} x^{6}}-\frac {\operatorname {polylog}\left (2, a \,x^{2}\right )}{3 a^{3} x^{6}}\right )}{2}\) | \(100\) |
Input:
int(polylog(2,a*x^2)/x^7,x,method=_RETURNVERBOSE)
Output:
-1/6*polylog(2,a*x^2)/x^6+1/18*ln(-a*x^2+1)/x^6+1/9*a*(-1/4/x^4-1/2*a/x^2+ a^2*ln(x)-1/2*a^2*ln(a*x^2-1))
Time = 0.10 (sec) , antiderivative size = 64, normalized size of antiderivative = 0.86 \[ \int \frac {\operatorname {PolyLog}\left (2,a x^2\right )}{x^7} \, dx=-\frac {2 \, a^{3} x^{6} \log \left (a x^{2} - 1\right ) - 4 \, a^{3} x^{6} \log \left (x\right ) + 2 \, a^{2} x^{4} + a x^{2} + 6 \, {\rm Li}_2\left (a x^{2}\right ) - 2 \, \log \left (-a x^{2} + 1\right )}{36 \, x^{6}} \] Input:
integrate(polylog(2,a*x^2)/x^7,x, algorithm="fricas")
Output:
-1/36*(2*a^3*x^6*log(a*x^2 - 1) - 4*a^3*x^6*log(x) + 2*a^2*x^4 + a*x^2 + 6 *dilog(a*x^2) - 2*log(-a*x^2 + 1))/x^6
Time = 4.76 (sec) , antiderivative size = 58, normalized size of antiderivative = 0.78 \[ \int \frac {\operatorname {PolyLog}\left (2,a x^2\right )}{x^7} \, dx=\frac {a^{3} \log {\left (x \right )}}{9} + \frac {a^{3} \operatorname {Li}_{1}\left (a x^{2}\right )}{18} - \frac {a^{2}}{18 x^{2}} - \frac {a}{36 x^{4}} - \frac {\operatorname {Li}_{1}\left (a x^{2}\right )}{18 x^{6}} - \frac {\operatorname {Li}_{2}\left (a x^{2}\right )}{6 x^{6}} \] Input:
integrate(polylog(2,a*x**2)/x**7,x)
Output:
a**3*log(x)/9 + a**3*polylog(1, a*x**2)/18 - a**2/(18*x**2) - a/(36*x**4) - polylog(1, a*x**2)/(18*x**6) - polylog(2, a*x**2)/(6*x**6)
Time = 0.05 (sec) , antiderivative size = 55, normalized size of antiderivative = 0.74 \[ \int \frac {\operatorname {PolyLog}\left (2,a x^2\right )}{x^7} \, dx=\frac {1}{9} \, a^{3} \log \left (x\right ) - \frac {2 \, a^{2} x^{4} + a x^{2} + 2 \, {\left (a^{3} x^{6} - 1\right )} \log \left (-a x^{2} + 1\right ) + 6 \, {\rm Li}_2\left (a x^{2}\right )}{36 \, x^{6}} \] Input:
integrate(polylog(2,a*x^2)/x^7,x, algorithm="maxima")
Output:
1/9*a^3*log(x) - 1/36*(2*a^2*x^4 + a*x^2 + 2*(a^3*x^6 - 1)*log(-a*x^2 + 1) + 6*dilog(a*x^2))/x^6
\[ \int \frac {\operatorname {PolyLog}\left (2,a x^2\right )}{x^7} \, dx=\int { \frac {{\rm Li}_2\left (a x^{2}\right )}{x^{7}} \,d x } \] Input:
integrate(polylog(2,a*x^2)/x^7,x, algorithm="giac")
Output:
integrate(dilog(a*x^2)/x^7, x)
Time = 0.22 (sec) , antiderivative size = 61, normalized size of antiderivative = 0.82 \[ \int \frac {\operatorname {PolyLog}\left (2,a x^2\right )}{x^7} \, dx=\frac {a^3\,\ln \left (x\right )}{9}-\frac {\mathrm {polylog}\left (2,a\,x^2\right )}{6\,x^6}-\frac {a^3\,\ln \left (a\,x^2-1\right )}{18}-\frac {a}{36\,x^4}+\frac {\ln \left (1-a\,x^2\right )}{18\,x^6}-\frac {a^2}{18\,x^2} \] Input:
int(polylog(2, a*x^2)/x^7,x)
Output:
(a^3*log(x))/9 - polylog(2, a*x^2)/(6*x^6) - (a^3*log(a*x^2 - 1))/18 - a/( 36*x^4) + log(1 - a*x^2)/(18*x^6) - a^2/(18*x^2)
\[ \int \frac {\operatorname {PolyLog}\left (2,a x^2\right )}{x^7} \, dx=\int \frac {\mathit {polylog}\left (2, a \,x^{2}\right )}{x^{7}}d x \] Input:
int(polylog(2,a*x^2)/x^7,x)
Output:
int(polylog(2,a*x**2)/x**7,x)