Integrand size = 22, antiderivative size = 22 \[ \int \frac {x^3}{\left (c+a^2 c x^2\right )^2 \arctan (a x)^2} \, dx=-\frac {x}{a^3 c^2 \arctan (a x)}+\frac {x}{a^3 c^2 \left (1+a^2 x^2\right ) \arctan (a x)}-\frac {\operatorname {CosIntegral}(2 \arctan (a x))}{a^4 c^2}+\frac {\text {Int}\left (\frac {1}{\arctan (a x)},x\right )}{a^3 c^2} \]
-x/a^3/c^2/arctan(a*x)+x/a^3/c^2/(a^2*x^2+1)/arctan(a*x)-Ci(2*arctan(a*x)) /a^4/c^2+Unintegrable(1/arctan(a*x),x)/a^3/c^2
Not integrable
Time = 3.40 (sec) , antiderivative size = 24, normalized size of antiderivative = 1.09 \[ \int \frac {x^3}{\left (c+a^2 c x^2\right )^2 \arctan (a x)^2} \, dx=\int \frac {x^3}{\left (c+a^2 c x^2\right )^2 \arctan (a x)^2} \, dx \]
Not integrable
Time = 1.14 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.00, number of steps used = 14, number of rules used = 0, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.000, Rules used = {5499, 27, 5457, 5353, 5503, 5439, 3042, 3793, 2009, 5505, 3042, 3793, 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.
\(\displaystyle \int \frac {x^3}{\arctan (a x)^2 \left (a^2 c x^2+c\right )^2} \, dx\) |
\(\Big \downarrow \) 5499 |
\(\displaystyle \frac {\int \frac {x}{c \left (a^2 x^2+1\right ) \arctan (a x)^2}dx}{a^2 c}-\frac {\int \frac {x}{c^2 \left (a^2 x^2+1\right )^2 \arctan (a x)^2}dx}{a^2}\) |
\(\Big \downarrow \) 27 |
\(\displaystyle \frac {\int \frac {x}{\left (a^2 x^2+1\right ) \arctan (a x)^2}dx}{a^2 c^2}-\frac {\int \frac {x}{\left (a^2 x^2+1\right )^2 \arctan (a x)^2}dx}{a^2 c^2}\) |
\(\Big \downarrow \) 5457 |
\(\displaystyle \frac {\frac {\int \frac {1}{\arctan (a x)}dx}{a}-\frac {x}{a \arctan (a x)}}{a^2 c^2}-\frac {\int \frac {x}{\left (a^2 x^2+1\right )^2 \arctan (a x)^2}dx}{a^2 c^2}\) |
\(\Big \downarrow \) 5353 |
\(\displaystyle \frac {\frac {\int \frac {1}{\arctan (a x)}dx}{a}-\frac {x}{a \arctan (a x)}}{a^2 c^2}-\frac {\int \frac {x}{\left (a^2 x^2+1\right )^2 \arctan (a x)^2}dx}{a^2 c^2}\) |
\(\Big \downarrow \) 5503 |
\(\displaystyle \frac {\frac {\int \frac {1}{\arctan (a x)}dx}{a}-\frac {x}{a \arctan (a x)}}{a^2 c^2}-\frac {\frac {\int \frac {1}{\left (a^2 x^2+1\right )^2 \arctan (a x)}dx}{a}-a \int \frac {x^2}{\left (a^2 x^2+1\right )^2 \arctan (a x)}dx-\frac {x}{a \left (a^2 x^2+1\right ) \arctan (a x)}}{a^2 c^2}\) |
\(\Big \downarrow \) 5439 |
\(\displaystyle \frac {\frac {\int \frac {1}{\arctan (a x)}dx}{a}-\frac {x}{a \arctan (a x)}}{a^2 c^2}-\frac {-a \int \frac {x^2}{\left (a^2 x^2+1\right )^2 \arctan (a x)}dx+\frac {\int \frac {1}{\left (a^2 x^2+1\right ) \arctan (a x)}d\arctan (a x)}{a^2}-\frac {x}{a \left (a^2 x^2+1\right ) \arctan (a x)}}{a^2 c^2}\) |
\(\Big \downarrow \) 3042 |
\(\displaystyle \frac {\frac {\int \frac {1}{\arctan (a x)}dx}{a}-\frac {x}{a \arctan (a x)}}{a^2 c^2}-\frac {-a \int \frac {x^2}{\left (a^2 x^2+1\right )^2 \arctan (a x)}dx+\frac {\int \frac {\sin \left (\arctan (a x)+\frac {\pi }{2}\right )^2}{\arctan (a x)}d\arctan (a x)}{a^2}-\frac {x}{a \left (a^2 x^2+1\right ) \arctan (a x)}}{a^2 c^2}\) |
\(\Big \downarrow \) 3793 |
\(\displaystyle \frac {\frac {\int \frac {1}{\arctan (a x)}dx}{a}-\frac {x}{a \arctan (a x)}}{a^2 c^2}-\frac {-a \int \frac {x^2}{\left (a^2 x^2+1\right )^2 \arctan (a x)}dx+\frac {\int \left (\frac {\cos (2 \arctan (a x))}{2 \arctan (a x)}+\frac {1}{2 \arctan (a x)}\right )d\arctan (a x)}{a^2}-\frac {x}{a \left (a^2 x^2+1\right ) \arctan (a x)}}{a^2 c^2}\) |
\(\Big \downarrow \) 2009 |
\(\displaystyle \frac {\frac {\int \frac {1}{\arctan (a x)}dx}{a}-\frac {x}{a \arctan (a x)}}{a^2 c^2}-\frac {-a \int \frac {x^2}{\left (a^2 x^2+1\right )^2 \arctan (a x)}dx+\frac {\frac {1}{2} \operatorname {CosIntegral}(2 \arctan (a x))+\frac {1}{2} \log (\arctan (a x))}{a^2}-\frac {x}{a \left (a^2 x^2+1\right ) \arctan (a x)}}{a^2 c^2}\) |
\(\Big \downarrow \) 5505 |
\(\displaystyle \frac {\frac {\int \frac {1}{\arctan (a x)}dx}{a}-\frac {x}{a \arctan (a x)}}{a^2 c^2}-\frac {-\frac {\int \frac {a^2 x^2}{\left (a^2 x^2+1\right ) \arctan (a x)}d\arctan (a x)}{a^2}+\frac {\frac {1}{2} \operatorname {CosIntegral}(2 \arctan (a x))+\frac {1}{2} \log (\arctan (a x))}{a^2}-\frac {x}{a \left (a^2 x^2+1\right ) \arctan (a x)}}{a^2 c^2}\) |
\(\Big \downarrow \) 3042 |
\(\displaystyle \frac {\frac {\int \frac {1}{\arctan (a x)}dx}{a}-\frac {x}{a \arctan (a x)}}{a^2 c^2}-\frac {-\frac {\int \frac {\sin (\arctan (a x))^2}{\arctan (a x)}d\arctan (a x)}{a^2}+\frac {\frac {1}{2} \operatorname {CosIntegral}(2 \arctan (a x))+\frac {1}{2} \log (\arctan (a x))}{a^2}-\frac {x}{a \left (a^2 x^2+1\right ) \arctan (a x)}}{a^2 c^2}\) |
\(\Big \downarrow \) 3793 |
\(\displaystyle \frac {\frac {\int \frac {1}{\arctan (a x)}dx}{a}-\frac {x}{a \arctan (a x)}}{a^2 c^2}-\frac {-\frac {\int \left (\frac {1}{2 \arctan (a x)}-\frac {\cos (2 \arctan (a x))}{2 \arctan (a x)}\right )d\arctan (a x)}{a^2}+\frac {\frac {1}{2} \operatorname {CosIntegral}(2 \arctan (a x))+\frac {1}{2} \log (\arctan (a x))}{a^2}-\frac {x}{a \left (a^2 x^2+1\right ) \arctan (a x)}}{a^2 c^2}\) |
\(\Big \downarrow \) 2009 |
\(\displaystyle \frac {\frac {\int \frac {1}{\arctan (a x)}dx}{a}-\frac {x}{a \arctan (a x)}}{a^2 c^2}-\frac {-\frac {\frac {1}{2} \log (\arctan (a x))-\frac {1}{2} \operatorname {CosIntegral}(2 \arctan (a x))}{a^2}+\frac {\frac {1}{2} \operatorname {CosIntegral}(2 \arctan (a x))+\frac {1}{2} \log (\arctan (a x))}{a^2}-\frac {x}{a \left (a^2 x^2+1\right ) \arctan (a x)}}{a^2 c^2}\) |
3.6.51.3.1 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[((c_.) + (d_.)*(x_))^(m_)*sin[(e_.) + (f_.)*(x_)]^(n_), x_Symbol] :> In t[ExpandTrigReduce[(c + d*x)^m, Sin[e + f*x]^n, x], x] /; FreeQ[{c, d, e, f , m}, x] && IGtQ[n, 1] && ( !RationalQ[m] || (GeQ[m, -1] && LtQ[m, 1]))
Int[((a_.) + ArcTan[(c_.)*(x_)^(n_.)]*(b_.))^(p_), x_Symbol] :> Unintegrabl e[(a + b*ArcTan[c*x^n])^p, x] /; FreeQ[{a, b, c, n, p}, x]
Int[((a_.) + ArcTan[(c_.)*(x_)]*(b_.))^(p_.)*((d_) + (e_.)*(x_)^2)^(q_), x_ Symbol] :> Simp[d^q/c Subst[Int[(a + b*x)^p/Cos[x]^(2*(q + 1)), x], x, Ar cTan[c*x]], x] /; FreeQ[{a, b, c, d, e, p}, x] && EqQ[e, c^2*d] && ILtQ[2*( q + 1), 0] && (IntegerQ[q] || GtQ[d, 0])
Int[(((a_.) + ArcTan[(c_.)*(x_)]*(b_.))^(p_)*(x_))/((d_) + (e_.)*(x_)^2), x _Symbol] :> Simp[x*((a + b*ArcTan[c*x])^(p + 1)/(b*c*d*(p + 1))), x] - Simp [1/(b*c*d*(p + 1)) Int[(a + b*ArcTan[c*x])^(p + 1), x], x] /; FreeQ[{a, b , c, d, e}, x] && EqQ[e, c^2*d] && !IGtQ[p, 0] && NeQ[p, -1]
Int[((a_.) + ArcTan[(c_.)*(x_)]*(b_.))^(p_.)*(x_)^(m_)*((d_) + (e_.)*(x_)^2 )^(q_), x_Symbol] :> Simp[1/e Int[x^(m - 2)*(d + e*x^2)^(q + 1)*(a + b*Ar cTan[c*x])^p, x], x] - Simp[d/e Int[x^(m - 2)*(d + e*x^2)^q*(a + b*ArcTan [c*x])^p, x], x] /; FreeQ[{a, b, c, d, e}, x] && EqQ[e, c^2*d] && IntegersQ [p, 2*q] && LtQ[q, -1] && IGtQ[m, 1] && NeQ[p, -1]
Int[((a_.) + ArcTan[(c_.)*(x_)]*(b_.))^(p_.)*(x_)^(m_.)*((d_) + (e_.)*(x_)^ 2)^(q_), x_Symbol] :> Simp[x^m*(d + e*x^2)^(q + 1)*((a + b*ArcTan[c*x])^(p + 1)/(b*c*d*(p + 1))), x] + (-Simp[c*((m + 2*q + 2)/(b*(p + 1))) Int[x^(m + 1)*(d + e*x^2)^q*(a + b*ArcTan[c*x])^(p + 1), x], x] - Simp[m/(b*c*(p + 1)) Int[x^(m - 1)*(d + e*x^2)^q*(a + b*ArcTan[c*x])^(p + 1), x], x]) /; F reeQ[{a, b, c, d, e, m}, x] && EqQ[e, c^2*d] && IntegerQ[m] && LtQ[q, -1] & & LtQ[p, -1] && NeQ[m + 2*q + 2, 0]
Int[((a_.) + ArcTan[(c_.)*(x_)]*(b_.))^(p_.)*(x_)^(m_.)*((d_) + (e_.)*(x_)^ 2)^(q_), x_Symbol] :> Simp[d^q/c^(m + 1) Subst[Int[(a + b*x)^p*(Sin[x]^m/ Cos[x]^(m + 2*(q + 1))), x], x, ArcTan[c*x]], x] /; FreeQ[{a, b, c, d, e, p }, x] && EqQ[e, c^2*d] && IGtQ[m, 0] && ILtQ[m + 2*q + 1, 0] && (IntegerQ[q ] || GtQ[d, 0])
Not integrable
Time = 8.64 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.00
\[\int \frac {x^{3}}{\left (a^{2} c \,x^{2}+c \right )^{2} \arctan \left (a x \right )^{2}}d x\]
Not integrable
Time = 0.25 (sec) , antiderivative size = 39, normalized size of antiderivative = 1.77 \[ \int \frac {x^3}{\left (c+a^2 c x^2\right )^2 \arctan (a x)^2} \, dx=\int { \frac {x^{3}}{{\left (a^{2} c x^{2} + c\right )}^{2} \arctan \left (a x\right )^{2}} \,d x } \]
Not integrable
Time = 0.88 (sec) , antiderivative size = 42, normalized size of antiderivative = 1.91 \[ \int \frac {x^3}{\left (c+a^2 c x^2\right )^2 \arctan (a x)^2} \, dx=\frac {\int \frac {x^{3}}{a^{4} x^{4} \operatorname {atan}^{2}{\left (a x \right )} + 2 a^{2} x^{2} \operatorname {atan}^{2}{\left (a x \right )} + \operatorname {atan}^{2}{\left (a x \right )}}\, dx}{c^{2}} \]
Not integrable
Time = 0.34 (sec) , antiderivative size = 103, normalized size of antiderivative = 4.68 \[ \int \frac {x^3}{\left (c+a^2 c x^2\right )^2 \arctan (a x)^2} \, dx=\int { \frac {x^{3}}{{\left (a^{2} c x^{2} + c\right )}^{2} \arctan \left (a x\right )^{2}} \,d x } \]
-(x^3 - (a^3*c^2*x^2 + a*c^2)*arctan(a*x)*integrate((a^2*x^4 + 3*x^2)/((a^ 5*c^2*x^4 + 2*a^3*c^2*x^2 + a*c^2)*arctan(a*x)), x))/((a^3*c^2*x^2 + a*c^2 )*arctan(a*x))
Not integrable
Time = 120.61 (sec) , antiderivative size = 3, normalized size of antiderivative = 0.14 \[ \int \frac {x^3}{\left (c+a^2 c x^2\right )^2 \arctan (a x)^2} \, dx=\int { \frac {x^{3}}{{\left (a^{2} c x^{2} + c\right )}^{2} \arctan \left (a x\right )^{2}} \,d x } \]
Not integrable
Time = 0.46 (sec) , antiderivative size = 24, normalized size of antiderivative = 1.09 \[ \int \frac {x^3}{\left (c+a^2 c x^2\right )^2 \arctan (a x)^2} \, dx=\int \frac {x^3}{{\mathrm {atan}\left (a\,x\right )}^2\,{\left (c\,a^2\,x^2+c\right )}^2} \,d x \]