Integrand size = 23, antiderivative size = 183 \[ \int \frac {a+b \log \left (c x^n\right )}{x^2 \left (d+e x^2\right )^2} \, dx=-\frac {3 b n}{2 d^2 x}+\frac {a+b \log \left (c x^n\right )}{2 d x \left (d+e x^2\right )}-\frac {3 a-b n+3 b \log \left (c x^n\right )}{2 d^2 x}-\frac {\sqrt {e} \arctan \left (\frac {\sqrt {e} x}{\sqrt {d}}\right ) \left (3 a-b n+3 b \log \left (c x^n\right )\right )}{2 d^{5/2}}+\frac {3 i b \sqrt {e} n \operatorname {PolyLog}\left (2,-\frac {i \sqrt {e} x}{\sqrt {d}}\right )}{4 d^{5/2}}-\frac {3 i b \sqrt {e} n \operatorname {PolyLog}\left (2,\frac {i \sqrt {e} x}{\sqrt {d}}\right )}{4 d^{5/2}} \]
-3/2*b*n/d^2/x+1/2*(a+b*ln(c*x^n))/d/x/(e*x^2+d)+1/2*(-3*a+b*n-3*b*ln(c*x^ n))/d^2/x-1/2*arctan(x*e^(1/2)/d^(1/2))*(3*a-b*n+3*b*ln(c*x^n))*e^(1/2)/d^ (5/2)+3/4*I*b*n*polylog(2,-I*x*e^(1/2)/d^(1/2))*e^(1/2)/d^(5/2)-3/4*I*b*n* polylog(2,I*x*e^(1/2)/d^(1/2))*e^(1/2)/d^(5/2)
Time = 0.48 (sec) , antiderivative size = 328, normalized size of antiderivative = 1.79 \[ \int \frac {a+b \log \left (c x^n\right )}{x^2 \left (d+e x^2\right )^2} \, dx=\frac {1}{4} \left (-\frac {4 b n}{d^2 x}-\frac {4 \left (a+b \log \left (c x^n\right )\right )}{d^2 x}+\frac {\sqrt {e} \left (a+b \log \left (c x^n\right )\right )}{d^2 \left (\sqrt {-d}-\sqrt {e} x\right )}-\frac {\sqrt {e} \left (a+b \log \left (c x^n\right )\right )}{d^2 \left (\sqrt {-d}+\sqrt {e} x\right )}+\frac {b \sqrt {e} n \left (-\log (x)+\log \left (\sqrt {-d}-\sqrt {e} x\right )\right )}{(-d)^{5/2}}+\frac {b \sqrt {e} n \left (\log (x)-\log \left (\sqrt {-d}+\sqrt {e} x\right )\right )}{(-d)^{5/2}}+\frac {3 \sqrt {e} \left (a+b \log \left (c x^n\right )\right ) \log \left (1+\frac {\sqrt {e} x}{\sqrt {-d}}\right )}{(-d)^{5/2}}-\frac {3 \sqrt {e} \left (a+b \log \left (c x^n\right )\right ) \log \left (1+\frac {d \sqrt {e} x}{(-d)^{3/2}}\right )}{(-d)^{5/2}}-\frac {3 b \sqrt {e} n \operatorname {PolyLog}\left (2,\frac {\sqrt {e} x}{\sqrt {-d}}\right )}{(-d)^{5/2}}+\frac {3 b \sqrt {e} n \operatorname {PolyLog}\left (2,\frac {d \sqrt {e} x}{(-d)^{3/2}}\right )}{(-d)^{5/2}}\right ) \]
((-4*b*n)/(d^2*x) - (4*(a + b*Log[c*x^n]))/(d^2*x) + (Sqrt[e]*(a + b*Log[c *x^n]))/(d^2*(Sqrt[-d] - Sqrt[e]*x)) - (Sqrt[e]*(a + b*Log[c*x^n]))/(d^2*( Sqrt[-d] + Sqrt[e]*x)) + (b*Sqrt[e]*n*(-Log[x] + Log[Sqrt[-d] - Sqrt[e]*x] ))/(-d)^(5/2) + (b*Sqrt[e]*n*(Log[x] - Log[Sqrt[-d] + Sqrt[e]*x]))/(-d)^(5 /2) + (3*Sqrt[e]*(a + b*Log[c*x^n])*Log[1 + (Sqrt[e]*x)/Sqrt[-d]])/(-d)^(5 /2) - (3*Sqrt[e]*(a + b*Log[c*x^n])*Log[1 + (d*Sqrt[e]*x)/(-d)^(3/2)])/(-d )^(5/2) - (3*b*Sqrt[e]*n*PolyLog[2, (Sqrt[e]*x)/Sqrt[-d]])/(-d)^(5/2) + (3 *b*Sqrt[e]*n*PolyLog[2, (d*Sqrt[e]*x)/(-d)^(3/2)])/(-d)^(5/2))/4
Time = 0.63 (sec) , antiderivative size = 181, normalized size of antiderivative = 0.99, number of steps used = 8, number of rules used = 8, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.348, Rules used = {2785, 25, 2780, 2741, 2761, 27, 5355, 2838}
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.
| \(\displaystyle \int \frac {a+b \log \left (c x^n\right )}{x^2 \left (d+e x^2\right )^2} \, dx\) |
| \(\Big \downarrow \) 2785 |
| \(\displaystyle \frac {a+b \log \left (c x^n\right )}{2 d x \left (d+e x^2\right )}-\frac {\int -\frac {3 a-b n+3 b \log \left (c x^n\right )}{x^2 \left (e x^2+d\right )}dx}{2 d}\) |
| \(\Big \downarrow \) 25 |
| \(\displaystyle \frac {\int \frac {3 a-b n+3 b \log \left (c x^n\right )}{x^2 \left (e x^2+d\right )}dx}{2 d}+\frac {a+b \log \left (c x^n\right )}{2 d x \left (d+e x^2\right )}\) |
| \(\Big \downarrow \) 2780 |
| \(\displaystyle \frac {\frac {\int \frac {3 a-b n+3 b \log \left (c x^n\right )}{x^2}dx}{d}-\frac {e \int \frac {3 a-b n+3 b \log \left (c x^n\right )}{e x^2+d}dx}{d}}{2 d}+\frac {a+b \log \left (c x^n\right )}{2 d x \left (d+e x^2\right )}\) |
| \(\Big \downarrow \) 2741 |
| \(\displaystyle \frac {\frac {-\frac {3 a+3 b \log \left (c x^n\right )-b n}{x}-\frac {3 b n}{x}}{d}-\frac {e \int \frac {3 a-b n+3 b \log \left (c x^n\right )}{e x^2+d}dx}{d}}{2 d}+\frac {a+b \log \left (c x^n\right )}{2 d x \left (d+e x^2\right )}\) |
| \(\Big \downarrow \) 2761 |
| \(\displaystyle \frac {\frac {-\frac {3 a+3 b \log \left (c x^n\right )-b n}{x}-\frac {3 b n}{x}}{d}-\frac {e \left (\frac {\arctan \left (\frac {\sqrt {e} x}{\sqrt {d}}\right ) \left (3 a+3 b \log \left (c x^n\right )-b n\right )}{\sqrt {d} \sqrt {e}}-3 b n \int \frac {\arctan \left (\frac {\sqrt {e} x}{\sqrt {d}}\right )}{\sqrt {d} \sqrt {e} x}dx\right )}{d}}{2 d}+\frac {a+b \log \left (c x^n\right )}{2 d x \left (d+e x^2\right )}\) |
| \(\Big \downarrow \) 27 |
| \(\displaystyle \frac {\frac {-\frac {3 a+3 b \log \left (c x^n\right )-b n}{x}-\frac {3 b n}{x}}{d}-\frac {e \left (\frac {\arctan \left (\frac {\sqrt {e} x}{\sqrt {d}}\right ) \left (3 a+3 b \log \left (c x^n\right )-b n\right )}{\sqrt {d} \sqrt {e}}-\frac {3 b n \int \frac {\arctan \left (\frac {\sqrt {e} x}{\sqrt {d}}\right )}{x}dx}{\sqrt {d} \sqrt {e}}\right )}{d}}{2 d}+\frac {a+b \log \left (c x^n\right )}{2 d x \left (d+e x^2\right )}\) |
| \(\Big \downarrow \) 5355 |
| \(\displaystyle \frac {a+b \log \left (c x^n\right )}{2 d x \left (d+e x^2\right )}+\frac {\frac {-\frac {3 a+3 b \log \left (c x^n\right )-b n}{x}-\frac {3 b n}{x}}{d}-\frac {e \left (\frac {\arctan \left (\frac {\sqrt {e} x}{\sqrt {d}}\right ) \left (3 a+3 b \log \left (c x^n\right )-b n\right )}{\sqrt {d} \sqrt {e}}-\frac {3 b n \left (\frac {1}{2} i \int \frac {\log \left (1-\frac {i \sqrt {e} x}{\sqrt {d}}\right )}{x}dx-\frac {1}{2} i \int \frac {\log \left (\frac {i \sqrt {e} x}{\sqrt {d}}+1\right )}{x}dx\right )}{\sqrt {d} \sqrt {e}}\right )}{d}}{2 d}\) |
| \(\Big \downarrow \) 2838 |
| \(\displaystyle \frac {a+b \log \left (c x^n\right )}{2 d x \left (d+e x^2\right )}+\frac {\frac {-\frac {3 a+3 b \log \left (c x^n\right )-b n}{x}-\frac {3 b n}{x}}{d}-\frac {e \left (\frac {\arctan \left (\frac {\sqrt {e} x}{\sqrt {d}}\right ) \left (3 a+3 b \log \left (c x^n\right )-b n\right )}{\sqrt {d} \sqrt {e}}-\frac {3 b n \left (\frac {1}{2} i \operatorname {PolyLog}\left (2,-\frac {i \sqrt {e} x}{\sqrt {d}}\right )-\frac {1}{2} i \operatorname {PolyLog}\left (2,\frac {i \sqrt {e} x}{\sqrt {d}}\right )\right )}{\sqrt {d} \sqrt {e}}\right )}{d}}{2 d}\) |
(a + b*Log[c*x^n])/(2*d*x*(d + e*x^2)) + (((-3*b*n)/x - (3*a - b*n + 3*b*L og[c*x^n])/x)/d - (e*((ArcTan[(Sqrt[e]*x)/Sqrt[d]]*(3*a - b*n + 3*b*Log[c* x^n]))/(Sqrt[d]*Sqrt[e]) - (3*b*n*((I/2)*PolyLog[2, ((-I)*Sqrt[e]*x)/Sqrt[ d]] - (I/2)*PolyLog[2, (I*Sqrt[e]*x)/Sqrt[d]]))/(Sqrt[d]*Sqrt[e])))/d)/(2* d)
3.3.29.3.1 Defintions of rubi rules used
Int[(a_)*(Fx_), x_Symbol] :> Simp[a Int[Fx, x], x] /; FreeQ[a, x] && !Ma tchQ[Fx, (b_)*(Gx_) /; FreeQ[b, x]]
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]
Int[((a_.) + Log[(c_.)*(x_)^(n_.)]*(b_.))/((d_) + (e_.)*(x_)^2), x_Symbol] :> With[{u = IntHide[1/(d + e*x^2), x]}, Simp[u*(a + b*Log[c*x^n]), x] - Si mp[b*n Int[u/x, x], x]] /; FreeQ[{a, b, c, d, e, n}, x]
Int[(((a_.) + Log[(c_.)*(x_)^(n_.)]*(b_.))^(p_.)*(x_)^(m_.))/((d_) + (e_.)* (x_)^(r_.)), x_Symbol] :> Simp[1/d Int[x^m*(a + b*Log[c*x^n])^p, x], x] - Simp[e/d Int[(x^(m + r)*(a + b*Log[c*x^n])^p)/(d + e*x^r), x], x] /; Fre eQ[{a, b, c, d, e, m, n, r}, x] && IGtQ[p, 0] && IGtQ[r, 0] && ILtQ[m, -1]
Int[((a_.) + Log[(c_.)*(x_)^(n_.)]*(b_.))*((f_.)*(x_))^(m_.)*((d_) + (e_.)* (x_)^2)^(q_.), x_Symbol] :> Simp[(-(f*x)^(m + 1))*(d + e*x^2)^(q + 1)*((a + b*Log[c*x^n])/(2*d*f*(q + 1))), x] + Simp[1/(2*d*(q + 1)) Int[(f*x)^m*(d + e*x^2)^(q + 1)*(a*(m + 2*q + 3) + b*n + b*(m + 2*q + 3)*Log[c*x^n]), x], x] /; FreeQ[{a, b, c, d, e, f, m, n}, x] && ILtQ[q, -1] && ILtQ[m, 0]
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]
Int[((a_.) + ArcTan[(c_.)*(x_)]*(b_.))/(x_), x_Symbol] :> Simp[a*Log[x], x] + (Simp[I*(b/2) Int[Log[1 - I*c*x]/x, x], x] - Simp[I*(b/2) Int[Log[1 + I*c*x]/x, x], x]) /; FreeQ[{a, b, c}, x]
Result contains higher order function than in optimal. Order 9 vs. order 4.
Time = 0.60 (sec) , antiderivative size = 568, normalized size of antiderivative = 3.10
| method | result | size |
| risch | \(-\frac {b \ln \left (x^{n}\right ) e x}{2 d^{2} \left (e \,x^{2}+d \right )}+\frac {3 b e \arctan \left (\frac {x e}{\sqrt {d e}}\right ) n \ln \left (x \right )}{2 d^{2} \sqrt {d e}}-\frac {3 b e \arctan \left (\frac {x e}{\sqrt {d e}}\right ) \ln \left (x^{n}\right )}{2 d^{2} \sqrt {d e}}-\frac {b \ln \left (x^{n}\right )}{d^{2} x}-\frac {b n e \ln \left (x \right ) \ln \left (\frac {-e x +\sqrt {-d e}}{\sqrt {-d e}}\right )}{2 d^{2} \sqrt {-d e}}+\frac {b n e \ln \left (x \right ) \ln \left (\frac {e x +\sqrt {-d e}}{\sqrt {-d e}}\right )}{2 d^{2} \sqrt {-d e}}-\frac {3 b n e \operatorname {dilog}\left (\frac {-e x +\sqrt {-d e}}{\sqrt {-d e}}\right )}{4 d^{2} \sqrt {-d e}}+\frac {3 b n e \operatorname {dilog}\left (\frac {e x +\sqrt {-d e}}{\sqrt {-d e}}\right )}{4 d^{2} \sqrt {-d e}}+\frac {b n e \arctan \left (\frac {x e}{\sqrt {d e}}\right )}{2 d^{2} \sqrt {d e}}-\frac {b n \,e^{2} \ln \left (x \right ) \ln \left (\frac {-e x +\sqrt {-d e}}{\sqrt {-d e}}\right ) x^{2}}{4 d^{2} \left (e \,x^{2}+d \right ) \sqrt {-d e}}+\frac {b n \,e^{2} \ln \left (x \right ) \ln \left (\frac {e x +\sqrt {-d e}}{\sqrt {-d e}}\right ) x^{2}}{4 d^{2} \left (e \,x^{2}+d \right ) \sqrt {-d e}}-\frac {b n e \ln \left (x \right ) \ln \left (\frac {-e x +\sqrt {-d e}}{\sqrt {-d e}}\right )}{4 d \left (e \,x^{2}+d \right ) \sqrt {-d e}}+\frac {b n e \ln \left (x \right ) \ln \left (\frac {e x +\sqrt {-d e}}{\sqrt {-d e}}\right )}{4 d \left (e \,x^{2}+d \right ) \sqrt {-d e}}-\frac {b n}{d^{2} x}+\left (-\frac {i b \pi \,\operatorname {csgn}\left (i c \right ) \operatorname {csgn}\left (i x^{n}\right ) \operatorname {csgn}\left (i c \,x^{n}\right )}{2}+\frac {i b \pi \,\operatorname {csgn}\left (i c \right ) \operatorname {csgn}\left (i c \,x^{n}\right )^{2}}{2}+\frac {i b \pi \,\operatorname {csgn}\left (i x^{n}\right ) \operatorname {csgn}\left (i c \,x^{n}\right )^{2}}{2}-\frac {i b \pi \operatorname {csgn}\left (i c \,x^{n}\right )^{3}}{2}+b \ln \left (c \right )+a \right ) \left (-\frac {e \left (\frac {x}{2 e \,x^{2}+2 d}+\frac {3 \arctan \left (\frac {x e}{\sqrt {d e}}\right )}{2 \sqrt {d e}}\right )}{d^{2}}-\frac {1}{d^{2} x}\right )\) | \(568\) |
-1/2*b*ln(x^n)/d^2*e*x/(e*x^2+d)+3/2*b*e/d^2/(d*e)^(1/2)*arctan(x*e/(d*e)^ (1/2))*n*ln(x)-3/2*b*e/d^2/(d*e)^(1/2)*arctan(x*e/(d*e)^(1/2))*ln(x^n)-b*l n(x^n)/d^2/x-1/2*b*n*e/d^2*ln(x)/(-d*e)^(1/2)*ln((-e*x+(-d*e)^(1/2))/(-d*e )^(1/2))+1/2*b*n*e/d^2*ln(x)/(-d*e)^(1/2)*ln((e*x+(-d*e)^(1/2))/(-d*e)^(1/ 2))-3/4*b*n*e/d^2/(-d*e)^(1/2)*dilog((-e*x+(-d*e)^(1/2))/(-d*e)^(1/2))+3/4 *b*n*e/d^2/(-d*e)^(1/2)*dilog((e*x+(-d*e)^(1/2))/(-d*e)^(1/2))+1/2*b*n*e/d ^2/(d*e)^(1/2)*arctan(x*e/(d*e)^(1/2))-1/4*b*n*e^2/d^2*ln(x)/(e*x^2+d)/(-d *e)^(1/2)*ln((-e*x+(-d*e)^(1/2))/(-d*e)^(1/2))*x^2+1/4*b*n*e^2/d^2*ln(x)/( e*x^2+d)/(-d*e)^(1/2)*ln((e*x+(-d*e)^(1/2))/(-d*e)^(1/2))*x^2-1/4*b*n*e/d* ln(x)/(e*x^2+d)/(-d*e)^(1/2)*ln((-e*x+(-d*e)^(1/2))/(-d*e)^(1/2))+1/4*b*n* e/d*ln(x)/(e*x^2+d)/(-d*e)^(1/2)*ln((e*x+(-d*e)^(1/2))/(-d*e)^(1/2))-b*n/d ^2/x+(-1/2*I*b*Pi*csgn(I*c)*csgn(I*x^n)*csgn(I*c*x^n)+1/2*I*b*Pi*csgn(I*c) *csgn(I*c*x^n)^2+1/2*I*b*Pi*csgn(I*x^n)*csgn(I*c*x^n)^2-1/2*I*b*Pi*csgn(I* c*x^n)^3+b*ln(c)+a)*(-e/d^2*(1/2*x/(e*x^2+d)+3/2/(d*e)^(1/2)*arctan(x*e/(d *e)^(1/2)))-1/d^2/x)
\[ \int \frac {a+b \log \left (c x^n\right )}{x^2 \left (d+e x^2\right )^2} \, dx=\int { \frac {b \log \left (c x^{n}\right ) + a}{{\left (e x^{2} + d\right )}^{2} x^{2}} \,d x } \]
\[ \int \frac {a+b \log \left (c x^n\right )}{x^2 \left (d+e x^2\right )^2} \, dx=\int \frac {a + b \log {\left (c x^{n} \right )}}{x^{2} \left (d + e x^{2}\right )^{2}}\, dx \]
Exception generated. \[ \int \frac {a+b \log \left (c x^n\right )}{x^2 \left (d+e x^2\right )^2} \, dx=\text {Exception raised: ValueError} \]
Exception raised: ValueError >> Computation failed since Maxima requested additional constraints; using the 'assume' command before evaluation *may* help (example of legal syntax is 'assume(e>0)', see `assume?` for more de tails)Is e
\[ \int \frac {a+b \log \left (c x^n\right )}{x^2 \left (d+e x^2\right )^2} \, dx=\int { \frac {b \log \left (c x^{n}\right ) + a}{{\left (e x^{2} + d\right )}^{2} x^{2}} \,d x } \]
Timed out. \[ \int \frac {a+b \log \left (c x^n\right )}{x^2 \left (d+e x^2\right )^2} \, dx=\int \frac {a+b\,\ln \left (c\,x^n\right )}{x^2\,{\left (e\,x^2+d\right )}^2} \,d x \]