Integrand size = 10, antiderivative size = 132 \[ \int x^2 \text {arcsinh}(a x)^3 \, dx=\frac {14 \sqrt {1+a^2 x^2}}{9 a^3}-\frac {2 \left (1+a^2 x^2\right )^{3/2}}{27 a^3}-\frac {4 x \text {arcsinh}(a x)}{3 a^2}+\frac {2}{9} x^3 \text {arcsinh}(a x)+\frac {2 \sqrt {1+a^2 x^2} \text {arcsinh}(a x)^2}{3 a^3}-\frac {x^2 \sqrt {1+a^2 x^2} \text {arcsinh}(a x)^2}{3 a}+\frac {1}{3} x^3 \text {arcsinh}(a x)^3 \]
-2/27*(a^2*x^2+1)^(3/2)/a^3-4/3*x*arcsinh(a*x)/a^2+2/9*x^3*arcsinh(a*x)+1/ 3*x^3*arcsinh(a*x)^3+14/9*(a^2*x^2+1)^(1/2)/a^3+2/3*arcsinh(a*x)^2*(a^2*x^ 2+1)^(1/2)/a^3-1/3*x^2*arcsinh(a*x)^2*(a^2*x^2+1)^(1/2)/a
Time = 0.05 (sec) , antiderivative size = 93, normalized size of antiderivative = 0.70 \[ \int x^2 \text {arcsinh}(a x)^3 \, dx=\frac {-2 \left (-20+a^2 x^2\right ) \sqrt {1+a^2 x^2}+6 a x \left (-6+a^2 x^2\right ) \text {arcsinh}(a x)-9 \left (-2+a^2 x^2\right ) \sqrt {1+a^2 x^2} \text {arcsinh}(a x)^2+9 a^3 x^3 \text {arcsinh}(a x)^3}{27 a^3} \]
(-2*(-20 + a^2*x^2)*Sqrt[1 + a^2*x^2] + 6*a*x*(-6 + a^2*x^2)*ArcSinh[a*x] - 9*(-2 + a^2*x^2)*Sqrt[1 + a^2*x^2]*ArcSinh[a*x]^2 + 9*a^3*x^3*ArcSinh[a* x]^3)/(27*a^3)
Time = 0.77 (sec) , antiderivative size = 171, normalized size of antiderivative = 1.30, number of steps used = 10, number of rules used = 9, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.900, Rules used = {6191, 6227, 6191, 243, 53, 2009, 6213, 6187, 241}
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.
| \(\displaystyle \int x^2 \text {arcsinh}(a x)^3 \, dx\) |
| \(\Big \downarrow \) 6191 |
| \(\displaystyle \frac {1}{3} x^3 \text {arcsinh}(a x)^3-a \int \frac {x^3 \text {arcsinh}(a x)^2}{\sqrt {a^2 x^2+1}}dx\) |
| \(\Big \downarrow \) 6227 |
| \(\displaystyle \frac {1}{3} x^3 \text {arcsinh}(a x)^3-a \left (-\frac {2 \int \frac {x \text {arcsinh}(a x)^2}{\sqrt {a^2 x^2+1}}dx}{3 a^2}-\frac {2 \int x^2 \text {arcsinh}(a x)dx}{3 a}+\frac {x^2 \sqrt {a^2 x^2+1} \text {arcsinh}(a x)^2}{3 a^2}\right )\) |
| \(\Big \downarrow \) 6191 |
| \(\displaystyle \frac {1}{3} x^3 \text {arcsinh}(a x)^3-a \left (-\frac {2 \int \frac {x \text {arcsinh}(a x)^2}{\sqrt {a^2 x^2+1}}dx}{3 a^2}-\frac {2 \left (\frac {1}{3} x^3 \text {arcsinh}(a x)-\frac {1}{3} a \int \frac {x^3}{\sqrt {a^2 x^2+1}}dx\right )}{3 a}+\frac {x^2 \sqrt {a^2 x^2+1} \text {arcsinh}(a x)^2}{3 a^2}\right )\) |
| \(\Big \downarrow \) 243 |
| \(\displaystyle \frac {1}{3} x^3 \text {arcsinh}(a x)^3-a \left (-\frac {2 \int \frac {x \text {arcsinh}(a x)^2}{\sqrt {a^2 x^2+1}}dx}{3 a^2}-\frac {2 \left (\frac {1}{3} x^3 \text {arcsinh}(a x)-\frac {1}{6} a \int \frac {x^2}{\sqrt {a^2 x^2+1}}dx^2\right )}{3 a}+\frac {x^2 \sqrt {a^2 x^2+1} \text {arcsinh}(a x)^2}{3 a^2}\right )\) |
| \(\Big \downarrow \) 53 |
| \(\displaystyle \frac {1}{3} x^3 \text {arcsinh}(a x)^3-a \left (-\frac {2 \int \frac {x \text {arcsinh}(a x)^2}{\sqrt {a^2 x^2+1}}dx}{3 a^2}-\frac {2 \left (\frac {1}{3} x^3 \text {arcsinh}(a x)-\frac {1}{6} a \int \left (\frac {\sqrt {a^2 x^2+1}}{a^2}-\frac {1}{a^2 \sqrt {a^2 x^2+1}}\right )dx^2\right )}{3 a}+\frac {x^2 \sqrt {a^2 x^2+1} \text {arcsinh}(a x)^2}{3 a^2}\right )\) |
| \(\Big \downarrow \) 2009 |
| \(\displaystyle \frac {1}{3} x^3 \text {arcsinh}(a x)^3-a \left (-\frac {2 \int \frac {x \text {arcsinh}(a x)^2}{\sqrt {a^2 x^2+1}}dx}{3 a^2}+\frac {x^2 \sqrt {a^2 x^2+1} \text {arcsinh}(a x)^2}{3 a^2}-\frac {2 \left (\frac {1}{3} x^3 \text {arcsinh}(a x)-\frac {1}{6} a \left (\frac {2 \left (a^2 x^2+1\right )^{3/2}}{3 a^4}-\frac {2 \sqrt {a^2 x^2+1}}{a^4}\right )\right )}{3 a}\right )\) |
| \(\Big \downarrow \) 6213 |
| \(\displaystyle \frac {1}{3} x^3 \text {arcsinh}(a x)^3-a \left (-\frac {2 \left (\frac {\sqrt {a^2 x^2+1} \text {arcsinh}(a x)^2}{a^2}-\frac {2 \int \text {arcsinh}(a x)dx}{a}\right )}{3 a^2}+\frac {x^2 \sqrt {a^2 x^2+1} \text {arcsinh}(a x)^2}{3 a^2}-\frac {2 \left (\frac {1}{3} x^3 \text {arcsinh}(a x)-\frac {1}{6} a \left (\frac {2 \left (a^2 x^2+1\right )^{3/2}}{3 a^4}-\frac {2 \sqrt {a^2 x^2+1}}{a^4}\right )\right )}{3 a}\right )\) |
| \(\Big \downarrow \) 6187 |
| \(\displaystyle \frac {1}{3} x^3 \text {arcsinh}(a x)^3-a \left (-\frac {2 \left (\frac {\sqrt {a^2 x^2+1} \text {arcsinh}(a x)^2}{a^2}-\frac {2 \left (x \text {arcsinh}(a x)-a \int \frac {x}{\sqrt {a^2 x^2+1}}dx\right )}{a}\right )}{3 a^2}+\frac {x^2 \sqrt {a^2 x^2+1} \text {arcsinh}(a x)^2}{3 a^2}-\frac {2 \left (\frac {1}{3} x^3 \text {arcsinh}(a x)-\frac {1}{6} a \left (\frac {2 \left (a^2 x^2+1\right )^{3/2}}{3 a^4}-\frac {2 \sqrt {a^2 x^2+1}}{a^4}\right )\right )}{3 a}\right )\) |
| \(\Big \downarrow \) 241 |
| \(\displaystyle \frac {1}{3} x^3 \text {arcsinh}(a x)^3-a \left (\frac {x^2 \sqrt {a^2 x^2+1} \text {arcsinh}(a x)^2}{3 a^2}-\frac {2 \left (\frac {\sqrt {a^2 x^2+1} \text {arcsinh}(a x)^2}{a^2}-\frac {2 \left (x \text {arcsinh}(a x)-\frac {\sqrt {a^2 x^2+1}}{a}\right )}{a}\right )}{3 a^2}-\frac {2 \left (\frac {1}{3} x^3 \text {arcsinh}(a x)-\frac {1}{6} a \left (\frac {2 \left (a^2 x^2+1\right )^{3/2}}{3 a^4}-\frac {2 \sqrt {a^2 x^2+1}}{a^4}\right )\right )}{3 a}\right )\) |
(x^3*ArcSinh[a*x]^3)/3 - a*((x^2*Sqrt[1 + a^2*x^2]*ArcSinh[a*x]^2)/(3*a^2) - (2*(-1/6*(a*((-2*Sqrt[1 + a^2*x^2])/a^4 + (2*(1 + a^2*x^2)^(3/2))/(3*a^ 4))) + (x^3*ArcSinh[a*x])/3))/(3*a) - (2*((Sqrt[1 + a^2*x^2]*ArcSinh[a*x]^ 2)/a^2 - (2*(-(Sqrt[1 + a^2*x^2]/a) + x*ArcSinh[a*x]))/a))/(3*a^2))
3.1.24.3.1 Defintions of rubi rules used
Int[((a_.) + (b_.)*(x_))^(m_.)*((c_.) + (d_.)*(x_))^(n_.), x_Symbol] :> Int [ExpandIntegrand[(a + b*x)^m*(c + d*x)^n, x], x] /; FreeQ[{a, b, c, d, n}, x] && IGtQ[m, 0] && ( !IntegerQ[n] || (EqQ[c, 0] && LeQ[7*m + 4*n + 4, 0]) || LtQ[9*m + 5*(n + 1), 0] || GtQ[m + n + 2, 0])
Int[(x_)*((a_) + (b_.)*(x_)^2)^(p_), x_Symbol] :> Simp[(a + b*x^2)^(p + 1)/ (2*b*(p + 1)), x] /; FreeQ[{a, b, p}, x] && NeQ[p, -1]
Int[(x_)^(m_.)*((a_) + (b_.)*(x_)^2)^(p_), x_Symbol] :> Simp[1/2 Subst[In t[x^((m - 1)/2)*(a + b*x)^p, x], x, x^2], x] /; FreeQ[{a, b, m, p}, x] && I ntegerQ[(m - 1)/2]
Int[((a_.) + ArcSinh[(c_.)*(x_)]*(b_.))^(n_.), x_Symbol] :> Simp[x*(a + b*A rcSinh[c*x])^n, x] - Simp[b*c*n Int[x*((a + b*ArcSinh[c*x])^(n - 1)/Sqrt[ 1 + c^2*x^2]), x], x] /; FreeQ[{a, b, c}, x] && GtQ[n, 0]
Int[((a_.) + ArcSinh[(c_.)*(x_)]*(b_.))^(n_.)*((d_.)*(x_))^(m_.), x_Symbol] :> Simp[(d*x)^(m + 1)*((a + b*ArcSinh[c*x])^n/(d*(m + 1))), x] - Simp[b*c* (n/(d*(m + 1))) Int[(d*x)^(m + 1)*((a + b*ArcSinh[c*x])^(n - 1)/Sqrt[1 + c^2*x^2]), x], x] /; FreeQ[{a, b, c, d, m}, x] && IGtQ[n, 0] && NeQ[m, -1]
Int[((a_.) + ArcSinh[(c_.)*(x_)]*(b_.))^(n_.)*(x_)*((d_) + (e_.)*(x_)^2)^(p _.), x_Symbol] :> Simp[(d + e*x^2)^(p + 1)*((a + b*ArcSinh[c*x])^n/(2*e*(p + 1))), x] - Simp[b*(n/(2*c*(p + 1)))*Simp[(d + e*x^2)^p/(1 + c^2*x^2)^p] Int[(1 + c^2*x^2)^(p + 1/2)*(a + b*ArcSinh[c*x])^(n - 1), x], x] /; FreeQ[ {a, b, c, d, e, p}, x] && EqQ[e, c^2*d] && GtQ[n, 0] && NeQ[p, -1]
Int[((a_.) + ArcSinh[(c_.)*(x_)]*(b_.))^(n_.)*((f_.)*(x_))^(m_)*((d_) + (e_ .)*(x_)^2)^(p_), x_Symbol] :> Simp[f*(f*x)^(m - 1)*(d + e*x^2)^(p + 1)*((a + b*ArcSinh[c*x])^n/(e*(m + 2*p + 1))), x] + (-Simp[f^2*((m - 1)/(c^2*(m + 2*p + 1))) Int[(f*x)^(m - 2)*(d + e*x^2)^p*(a + b*ArcSinh[c*x])^n, x], x] - Simp[b*f*(n/(c*(m + 2*p + 1)))*Simp[(d + e*x^2)^p/(1 + c^2*x^2)^p] Int [(f*x)^(m - 1)*(1 + c^2*x^2)^(p + 1/2)*(a + b*ArcSinh[c*x])^(n - 1), x], x] ) /; FreeQ[{a, b, c, d, e, f, p}, x] && EqQ[e, c^2*d] && GtQ[n, 0] && IGtQ[ m, 1] && NeQ[m + 2*p + 1, 0]
Time = 0.03 (sec) , antiderivative size = 116, normalized size of antiderivative = 0.88
| method | result | size |
| derivativedivides | \(\frac {\frac {a^{3} x^{3} \operatorname {arcsinh}\left (a x \right )^{3}}{3}+\frac {2 \operatorname {arcsinh}\left (a x \right )^{2} \sqrt {a^{2} x^{2}+1}}{3}-\frac {a^{2} x^{2} \operatorname {arcsinh}\left (a x \right )^{2} \sqrt {a^{2} x^{2}+1}}{3}-\frac {4 a x \,\operatorname {arcsinh}\left (a x \right )}{3}+\frac {40 \sqrt {a^{2} x^{2}+1}}{27}+\frac {2 a^{3} x^{3} \operatorname {arcsinh}\left (a x \right )}{9}-\frac {2 a^{2} x^{2} \sqrt {a^{2} x^{2}+1}}{27}}{a^{3}}\) | \(116\) |
| default | \(\frac {\frac {a^{3} x^{3} \operatorname {arcsinh}\left (a x \right )^{3}}{3}+\frac {2 \operatorname {arcsinh}\left (a x \right )^{2} \sqrt {a^{2} x^{2}+1}}{3}-\frac {a^{2} x^{2} \operatorname {arcsinh}\left (a x \right )^{2} \sqrt {a^{2} x^{2}+1}}{3}-\frac {4 a x \,\operatorname {arcsinh}\left (a x \right )}{3}+\frac {40 \sqrt {a^{2} x^{2}+1}}{27}+\frac {2 a^{3} x^{3} \operatorname {arcsinh}\left (a x \right )}{9}-\frac {2 a^{2} x^{2} \sqrt {a^{2} x^{2}+1}}{27}}{a^{3}}\) | \(116\) |
1/a^3*(1/3*a^3*x^3*arcsinh(a*x)^3+2/3*arcsinh(a*x)^2*(a^2*x^2+1)^(1/2)-1/3 *a^2*x^2*arcsinh(a*x)^2*(a^2*x^2+1)^(1/2)-4/3*a*x*arcsinh(a*x)+40/27*(a^2* x^2+1)^(1/2)+2/9*a^3*x^3*arcsinh(a*x)-2/27*a^2*x^2*(a^2*x^2+1)^(1/2))
Time = 0.26 (sec) , antiderivative size = 124, normalized size of antiderivative = 0.94 \[ \int x^2 \text {arcsinh}(a x)^3 \, dx=\frac {9 \, a^{3} x^{3} \log \left (a x + \sqrt {a^{2} x^{2} + 1}\right )^{3} - 9 \, \sqrt {a^{2} x^{2} + 1} {\left (a^{2} x^{2} - 2\right )} \log \left (a x + \sqrt {a^{2} x^{2} + 1}\right )^{2} + 6 \, {\left (a^{3} x^{3} - 6 \, a x\right )} \log \left (a x + \sqrt {a^{2} x^{2} + 1}\right ) - 2 \, \sqrt {a^{2} x^{2} + 1} {\left (a^{2} x^{2} - 20\right )}}{27 \, a^{3}} \]
1/27*(9*a^3*x^3*log(a*x + sqrt(a^2*x^2 + 1))^3 - 9*sqrt(a^2*x^2 + 1)*(a^2* x^2 - 2)*log(a*x + sqrt(a^2*x^2 + 1))^2 + 6*(a^3*x^3 - 6*a*x)*log(a*x + sq rt(a^2*x^2 + 1)) - 2*sqrt(a^2*x^2 + 1)*(a^2*x^2 - 20))/a^3
Time = 0.39 (sec) , antiderivative size = 128, normalized size of antiderivative = 0.97 \[ \int x^2 \text {arcsinh}(a x)^3 \, dx=\begin {cases} \frac {x^{3} \operatorname {asinh}^{3}{\left (a x \right )}}{3} + \frac {2 x^{3} \operatorname {asinh}{\left (a x \right )}}{9} - \frac {x^{2} \sqrt {a^{2} x^{2} + 1} \operatorname {asinh}^{2}{\left (a x \right )}}{3 a} - \frac {2 x^{2} \sqrt {a^{2} x^{2} + 1}}{27 a} - \frac {4 x \operatorname {asinh}{\left (a x \right )}}{3 a^{2}} + \frac {2 \sqrt {a^{2} x^{2} + 1} \operatorname {asinh}^{2}{\left (a x \right )}}{3 a^{3}} + \frac {40 \sqrt {a^{2} x^{2} + 1}}{27 a^{3}} & \text {for}\: a \neq 0 \\0 & \text {otherwise} \end {cases} \]
Piecewise((x**3*asinh(a*x)**3/3 + 2*x**3*asinh(a*x)/9 - x**2*sqrt(a**2*x** 2 + 1)*asinh(a*x)**2/(3*a) - 2*x**2*sqrt(a**2*x**2 + 1)/(27*a) - 4*x*asinh (a*x)/(3*a**2) + 2*sqrt(a**2*x**2 + 1)*asinh(a*x)**2/(3*a**3) + 40*sqrt(a* *2*x**2 + 1)/(27*a**3), Ne(a, 0)), (0, True))
Time = 0.20 (sec) , antiderivative size = 116, normalized size of antiderivative = 0.88 \[ \int x^2 \text {arcsinh}(a x)^3 \, dx=\frac {1}{3} \, x^{3} \operatorname {arsinh}\left (a x\right )^{3} - \frac {1}{3} \, a {\left (\frac {\sqrt {a^{2} x^{2} + 1} x^{2}}{a^{2}} - \frac {2 \, \sqrt {a^{2} x^{2} + 1}}{a^{4}}\right )} \operatorname {arsinh}\left (a x\right )^{2} - \frac {2}{27} \, a {\left (\frac {\sqrt {a^{2} x^{2} + 1} x^{2} - \frac {20 \, \sqrt {a^{2} x^{2} + 1}}{a^{2}}}{a^{2}} - \frac {3 \, {\left (a^{2} x^{3} - 6 \, x\right )} \operatorname {arsinh}\left (a x\right )}{a^{3}}\right )} \]
1/3*x^3*arcsinh(a*x)^3 - 1/3*a*(sqrt(a^2*x^2 + 1)*x^2/a^2 - 2*sqrt(a^2*x^2 + 1)/a^4)*arcsinh(a*x)^2 - 2/27*a*((sqrt(a^2*x^2 + 1)*x^2 - 20*sqrt(a^2*x ^2 + 1)/a^2)/a^2 - 3*(a^2*x^3 - 6*x)*arcsinh(a*x)/a^3)
Exception generated. \[ \int x^2 \text {arcsinh}(a x)^3 \, dx=\text {Exception raised: TypeError} \]
Exception raised: TypeError >> an error occurred running a Giac command:IN PUT:sage2:=int(sage0,sageVARx):;OUTPUT:sym2poly/r2sym(const gen & e,const index_m & i,const vecteur & l) Error: Bad Argument Value
Timed out. \[ \int x^2 \text {arcsinh}(a x)^3 \, dx=\int x^2\,{\mathrm {asinh}\left (a\,x\right )}^3 \,d x \]