Integrand size = 20, antiderivative size = 184 \[ \int \frac {e^{-3 \coth ^{-1}(a x)}}{(c-a c x)^{7/2}} \, dx=-\frac {a^2 \left (1-\frac {1}{a x}\right )^{7/2} x^2}{2 \left (a-\frac {1}{x}\right ) \sqrt {1+\frac {1}{a x}} (c-a c x)^{7/2}}-\frac {3 a^2 \left (1-\frac {1}{a x}\right )^{7/2} x^3}{4 \sqrt {1+\frac {1}{a x}} (c-a c x)^{7/2}}+\frac {3 a^{5/2} \left (1-\frac {1}{a x}\right )^{7/2} \text {arctanh}\left (\frac {\sqrt {2} \sqrt {\frac {1}{x}}}{\sqrt {a} \sqrt {1+\frac {1}{a x}}}\right )}{4 \sqrt {2} \left (\frac {1}{x}\right )^{7/2} (c-a c x)^{7/2}} \]
3/8*a^(5/2)*(1-1/a/x)^(7/2)*arctanh(2^(1/2)*(1/x)^(1/2)/a^(1/2)/(1+1/a/x)^ (1/2))/(1/x)^(7/2)/(-a*c*x+c)^(7/2)*2^(1/2)-1/2*a^2*(1-1/a/x)^(7/2)*x^2/(a -1/x)/(-a*c*x+c)^(7/2)/(1+1/a/x)^(1/2)-3/4*a^2*(1-1/a/x)^(7/2)*x^3/(-a*c*x +c)^(7/2)/(1+1/a/x)^(1/2)
Time = 0.32 (sec) , antiderivative size = 130, normalized size of antiderivative = 0.71 \[ \int \frac {e^{-3 \coth ^{-1}(a x)}}{(c-a c x)^{7/2}} \, dx=\frac {\sqrt {1-\frac {1}{a x}} \left (-2+6 a x-\frac {3 \sqrt {2} \sqrt {a} \sqrt {1+\frac {1}{a x}} (-1+a x) \text {arctanh}\left (\frac {\sqrt {2} \sqrt {\frac {1}{x}}}{\sqrt {a} \sqrt {1+\frac {1}{a x}}}\right )}{\sqrt {\frac {1}{x}}}\right )}{8 a c^3 \sqrt {1+\frac {1}{a x}} (-1+a x) \sqrt {c-a c x}} \]
(Sqrt[1 - 1/(a*x)]*(-2 + 6*a*x - (3*Sqrt[2]*Sqrt[a]*Sqrt[1 + 1/(a*x)]*(-1 + a*x)*ArcTanh[(Sqrt[2]*Sqrt[x^(-1)])/(Sqrt[a]*Sqrt[1 + 1/(a*x)])])/Sqrt[x ^(-1)]))/(8*a*c^3*Sqrt[1 + 1/(a*x)]*(-1 + a*x)*Sqrt[c - a*c*x])
Time = 0.29 (sec) , antiderivative size = 141, normalized size of antiderivative = 0.77, number of steps used = 7, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.300, Rules used = {6727, 27, 105, 105, 104, 219}
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.
| \(\displaystyle \int \frac {e^{-3 \coth ^{-1}(a x)}}{(c-a c x)^{7/2}} \, dx\) |
| \(\Big \downarrow \) 6727 |
| \(\displaystyle -\frac {\left (1-\frac {1}{a x}\right )^{7/2} \int \frac {a^2 \left (\frac {1}{x}\right )^{3/2}}{\left (a-\frac {1}{x}\right )^2 \left (1+\frac {1}{a x}\right )^{3/2}}d\frac {1}{x}}{\left (\frac {1}{x}\right )^{7/2} (c-a c x)^{7/2}}\) |
| \(\Big \downarrow \) 27 |
| \(\displaystyle -\frac {a^2 \left (1-\frac {1}{a x}\right )^{7/2} \int \frac {\left (\frac {1}{x}\right )^{3/2}}{\left (a-\frac {1}{x}\right )^2 \left (1+\frac {1}{a x}\right )^{3/2}}d\frac {1}{x}}{\left (\frac {1}{x}\right )^{7/2} (c-a c x)^{7/2}}\) |
| \(\Big \downarrow \) 105 |
| \(\displaystyle -\frac {a^2 \left (1-\frac {1}{a x}\right )^{7/2} \left (\frac {\left (\frac {1}{x}\right )^{3/2}}{2 \left (a-\frac {1}{x}\right ) \sqrt {\frac {1}{a x}+1}}-\frac {3}{4} \int \frac {\sqrt {\frac {1}{x}}}{\left (a-\frac {1}{x}\right ) \left (1+\frac {1}{a x}\right )^{3/2}}d\frac {1}{x}\right )}{\left (\frac {1}{x}\right )^{7/2} (c-a c x)^{7/2}}\) |
| \(\Big \downarrow \) 105 |
| \(\displaystyle -\frac {a^2 \left (1-\frac {1}{a x}\right )^{7/2} \left (\frac {\left (\frac {1}{x}\right )^{3/2}}{2 \left (a-\frac {1}{x}\right ) \sqrt {\frac {1}{a x}+1}}-\frac {3}{4} \left (\frac {1}{2} a \int \frac {1}{\left (a-\frac {1}{x}\right ) \sqrt {1+\frac {1}{a x}} \sqrt {\frac {1}{x}}}d\frac {1}{x}-\frac {\sqrt {\frac {1}{x}}}{\sqrt {\frac {1}{a x}+1}}\right )\right )}{\left (\frac {1}{x}\right )^{7/2} (c-a c x)^{7/2}}\) |
| \(\Big \downarrow \) 104 |
| \(\displaystyle -\frac {a^2 \left (1-\frac {1}{a x}\right )^{7/2} \left (\frac {\left (\frac {1}{x}\right )^{3/2}}{2 \left (a-\frac {1}{x}\right ) \sqrt {\frac {1}{a x}+1}}-\frac {3}{4} \left (a \int \frac {1}{a-\frac {2}{x^2}}d\frac {\sqrt {\frac {1}{x}}}{\sqrt {1+\frac {1}{a x}}}-\frac {\sqrt {\frac {1}{x}}}{\sqrt {\frac {1}{a x}+1}}\right )\right )}{\left (\frac {1}{x}\right )^{7/2} (c-a c x)^{7/2}}\) |
| \(\Big \downarrow \) 219 |
| \(\displaystyle -\frac {a^2 \left (1-\frac {1}{a x}\right )^{7/2} \left (\frac {\left (\frac {1}{x}\right )^{3/2}}{2 \left (a-\frac {1}{x}\right ) \sqrt {\frac {1}{a x}+1}}-\frac {3}{4} \left (\frac {\sqrt {a} \text {arctanh}\left (\frac {\sqrt {2} \sqrt {\frac {1}{x}}}{\sqrt {a} \sqrt {\frac {1}{a x}+1}}\right )}{\sqrt {2}}-\frac {\sqrt {\frac {1}{x}}}{\sqrt {\frac {1}{a x}+1}}\right )\right )}{\left (\frac {1}{x}\right )^{7/2} (c-a c x)^{7/2}}\) |
-((a^2*(1 - 1/(a*x))^(7/2)*((x^(-1))^(3/2)/(2*(a - x^(-1))*Sqrt[1 + 1/(a*x )]) - (3*(-(Sqrt[x^(-1)]/Sqrt[1 + 1/(a*x)]) + (Sqrt[a]*ArcTanh[(Sqrt[2]*Sq rt[x^(-1)])/(Sqrt[a]*Sqrt[1 + 1/(a*x)])])/Sqrt[2]))/4))/((x^(-1))^(7/2)*(c - a*c*x)^(7/2)))
3.3.78.3.1 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_.) + (b_.)*(x_))^(m_)*((c_.) + (d_.)*(x_))^(n_))/((e_.) + (f_.)*(x _)), x_] :> With[{q = Denominator[m]}, Simp[q Subst[Int[x^(q*(m + 1) - 1) /(b*e - a*f - (d*e - c*f)*x^q), x], x, (a + b*x)^(1/q)/(c + d*x)^(1/q)], x] ] /; FreeQ[{a, b, c, d, e, f}, x] && EqQ[m + n + 1, 0] && RationalQ[n] && L tQ[-1, m, 0] && SimplerQ[a + b*x, c + d*x]
Int[((a_.) + (b_.)*(x_))^(m_)*((c_.) + (d_.)*(x_))^(n_)*((e_.) + (f_.)*(x_) )^(p_), x_] :> Simp[(a + b*x)^(m + 1)*(c + d*x)^n*((e + f*x)^(p + 1)/((m + 1)*(b*e - a*f))), x] - Simp[n*((d*e - c*f)/((m + 1)*(b*e - a*f))) Int[(a + b*x)^(m + 1)*(c + d*x)^(n - 1)*(e + f*x)^p, x], x] /; FreeQ[{a, b, c, d, e, f, m, p}, x] && EqQ[m + n + p + 2, 0] && GtQ[n, 0] && (SumSimplerQ[m, 1] || !SumSimplerQ[p, 1]) && NeQ[m, -1]
Int[((a_) + (b_.)*(x_)^2)^(-1), x_Symbol] :> Simp[(1/(Rt[a, 2]*Rt[-b, 2]))* ArcTanh[Rt[-b, 2]*(x/Rt[a, 2])], x] /; FreeQ[{a, b}, x] && NegQ[a/b] && (Gt Q[a, 0] || LtQ[b, 0])
Int[E^(ArcCoth[(a_.)*(x_)]*(n_.))*((c_) + (d_.)*(x_))^(p_), x_Symbol] :> Si mp[(-(1/x)^p)*((c + d*x)^p/(1 + c/(d*x))^p) Subst[Int[((1 + c*(x/d))^p*(( 1 + x/a)^(n/2)/x^(p + 2)))/(1 - x/a)^(n/2), x], x, 1/x], x] /; FreeQ[{a, c, d, n, p}, x] && EqQ[a^2*c^2 - d^2, 0] && !IntegerQ[p]
Time = 0.47 (sec) , antiderivative size = 129, normalized size of antiderivative = 0.70
| method | result | size |
| default | \(-\frac {\left (\frac {a x -1}{a x +1}\right )^{\frac {3}{2}} \left (a x +1\right ) \sqrt {-c \left (a x -1\right )}\, \left (3 \sqrt {2}\, \arctan \left (\frac {\sqrt {-c \left (a x +1\right )}\, \sqrt {2}}{2 \sqrt {c}}\right ) a x \sqrt {-c \left (a x +1\right )}-3 \arctan \left (\frac {\sqrt {-c \left (a x +1\right )}\, \sqrt {2}}{2 \sqrt {c}}\right ) \sqrt {2}\, \sqrt {-c \left (a x +1\right )}+6 \sqrt {c}\, a x -2 \sqrt {c}\right )}{8 \left (a x -1\right )^{3} c^{\frac {9}{2}} a}\) | \(129\) |
-1/8*((a*x-1)/(a*x+1))^(3/2)*(a*x+1)/(a*x-1)^3*(-c*(a*x-1))^(1/2)/c^(9/2)* (3*2^(1/2)*arctan(1/2*(-c*(a*x+1))^(1/2)*2^(1/2)/c^(1/2))*a*x*(-c*(a*x+1)) ^(1/2)-3*arctan(1/2*(-c*(a*x+1))^(1/2)*2^(1/2)/c^(1/2))*2^(1/2)*(-c*(a*x+1 ))^(1/2)+6*c^(1/2)*a*x-2*c^(1/2))/a
Time = 0.28 (sec) , antiderivative size = 285, normalized size of antiderivative = 1.55 \[ \int \frac {e^{-3 \coth ^{-1}(a x)}}{(c-a c x)^{7/2}} \, dx=\left [-\frac {3 \, \sqrt {2} {\left (a^{2} x^{2} - 2 \, a x + 1\right )} \sqrt {-c} \log \left (-\frac {a^{2} c x^{2} + 2 \, a c x + 2 \, \sqrt {2} \sqrt {-a c x + c} {\left (a x + 1\right )} \sqrt {-c} \sqrt {\frac {a x - 1}{a x + 1}} - 3 \, c}{a^{2} x^{2} - 2 \, a x + 1}\right ) + 4 \, \sqrt {-a c x + c} {\left (3 \, a x - 1\right )} \sqrt {\frac {a x - 1}{a x + 1}}}{16 \, {\left (a^{3} c^{4} x^{2} - 2 \, a^{2} c^{4} x + a c^{4}\right )}}, \frac {3 \, \sqrt {2} {\left (a^{2} x^{2} - 2 \, a x + 1\right )} \sqrt {c} \arctan \left (\frac {\sqrt {2} \sqrt {-a c x + c} \sqrt {c} \sqrt {\frac {a x - 1}{a x + 1}}}{a c x - c}\right ) - 2 \, \sqrt {-a c x + c} {\left (3 \, a x - 1\right )} \sqrt {\frac {a x - 1}{a x + 1}}}{8 \, {\left (a^{3} c^{4} x^{2} - 2 \, a^{2} c^{4} x + a c^{4}\right )}}\right ] \]
[-1/16*(3*sqrt(2)*(a^2*x^2 - 2*a*x + 1)*sqrt(-c)*log(-(a^2*c*x^2 + 2*a*c*x + 2*sqrt(2)*sqrt(-a*c*x + c)*(a*x + 1)*sqrt(-c)*sqrt((a*x - 1)/(a*x + 1)) - 3*c)/(a^2*x^2 - 2*a*x + 1)) + 4*sqrt(-a*c*x + c)*(3*a*x - 1)*sqrt((a*x - 1)/(a*x + 1)))/(a^3*c^4*x^2 - 2*a^2*c^4*x + a*c^4), 1/8*(3*sqrt(2)*(a^2* x^2 - 2*a*x + 1)*sqrt(c)*arctan(sqrt(2)*sqrt(-a*c*x + c)*sqrt(c)*sqrt((a*x - 1)/(a*x + 1))/(a*c*x - c)) - 2*sqrt(-a*c*x + c)*(3*a*x - 1)*sqrt((a*x - 1)/(a*x + 1)))/(a^3*c^4*x^2 - 2*a^2*c^4*x + a*c^4)]
Timed out. \[ \int \frac {e^{-3 \coth ^{-1}(a x)}}{(c-a c x)^{7/2}} \, dx=\text {Timed out} \]
\[ \int \frac {e^{-3 \coth ^{-1}(a x)}}{(c-a c x)^{7/2}} \, dx=\int { \frac {\left (\frac {a x - 1}{a x + 1}\right )^{\frac {3}{2}}}{{\left (-a c x + c\right )}^{\frac {7}{2}}} \,d x } \]
Time = 0.30 (sec) , antiderivative size = 90, normalized size of antiderivative = 0.49 \[ \int \frac {e^{-3 \coth ^{-1}(a x)}}{(c-a c x)^{7/2}} \, dx=-\frac {{\left (\frac {3 \, \sqrt {2} \arctan \left (\frac {\sqrt {2} \sqrt {-a c x - c}}{2 \, \sqrt {c}}\right )}{a c^{\frac {5}{2}}} - \frac {2 \, {\left (3 \, a c x - c\right )}}{{\left ({\left (-a c x - c\right )}^{\frac {3}{2}} + 2 \, \sqrt {-a c x - c} c\right )} a c^{2}}\right )} {\left | c \right |} \mathrm {sgn}\left (a x + 1\right )}{8 \, c^{2}} \]
-1/8*(3*sqrt(2)*arctan(1/2*sqrt(2)*sqrt(-a*c*x - c)/sqrt(c))/(a*c^(5/2)) - 2*(3*a*c*x - c)/(((-a*c*x - c)^(3/2) + 2*sqrt(-a*c*x - c)*c)*a*c^2))*abs( c)*sgn(a*x + 1)/c^2
Timed out. \[ \int \frac {e^{-3 \coth ^{-1}(a x)}}{(c-a c x)^{7/2}} \, dx=\int \frac {{\left (\frac {a\,x-1}{a\,x+1}\right )}^{3/2}}{{\left (c-a\,c\,x\right )}^{7/2}} \,d x \]