Integrand size = 16, antiderivative size = 302 \[ \int \frac {1}{\left (a+b \text {arccosh}\left (-1+d x^2\right )\right )^{7/2}} \, dx=\frac {2 x^2-d x^4}{5 b x \sqrt {d x^2} \sqrt {-2+d x^2} \left (a+b \text {arccosh}\left (-1+d x^2\right )\right )^{5/2}}-\frac {x}{15 b^2 \left (a+b \text {arccosh}\left (-1+d x^2\right )\right )^{3/2}}-\frac {\sqrt {d x^2} \sqrt {-2+d x^2}}{15 b^3 d x \sqrt {a+b \text {arccosh}\left (-1+d x^2\right )}}+\frac {\sqrt {\frac {\pi }{2}} \cosh \left (\frac {1}{2} \text {arccosh}\left (-1+d x^2\right )\right ) \text {erfi}\left (\frac {\sqrt {a+b \text {arccosh}\left (-1+d x^2\right )}}{\sqrt {2} \sqrt {b}}\right ) \left (\cosh \left (\frac {a}{2 b}\right )-\sinh \left (\frac {a}{2 b}\right )\right )}{15 b^{7/2} d x}+\frac {\sqrt {\frac {\pi }{2}} \cosh \left (\frac {1}{2} \text {arccosh}\left (-1+d x^2\right )\right ) \text {erf}\left (\frac {\sqrt {a+b \text {arccosh}\left (-1+d x^2\right )}}{\sqrt {2} \sqrt {b}}\right ) \left (\cosh \left (\frac {a}{2 b}\right )+\sinh \left (\frac {a}{2 b}\right )\right )}{15 b^{7/2} d x} \] Output:
1/5*(-d*x^4+2*x^2)/b/x/(d*x^2)^(1/2)/(d*x^2-2)^(1/2)/(a+b*arccosh(d*x^2-1) )^(5/2)-1/15*x/b^2/(a+b*arccosh(d*x^2-1))^(3/2)-1/15*(d*x^2)^(1/2)*(d*x^2- 2)^(1/2)/b^3/d/x/(a+b*arccosh(d*x^2-1))^(1/2)+1/30*2^(1/2)*Pi^(1/2)*cosh(1 /2*arccosh(d*x^2-1))*erfi(1/2*(a+b*arccosh(d*x^2-1))^(1/2)*2^(1/2)/b^(1/2) )*(cosh(1/2*a/b)-sinh(1/2*a/b))/b^(7/2)/d/x+1/30*2^(1/2)*Pi^(1/2)*cosh(1/2 *arccosh(d*x^2-1))*erf(1/2*(a+b*arccosh(d*x^2-1))^(1/2)*2^(1/2)/b^(1/2))*( cosh(1/2*a/b)+sinh(1/2*a/b))/b^(7/2)/d/x
Time = 0.69 (sec) , antiderivative size = 260, normalized size of antiderivative = 0.86 \[ \int \frac {1}{\left (a+b \text {arccosh}\left (-1+d x^2\right )\right )^{7/2}} \, dx=\frac {\cosh \left (\frac {1}{2} \text {arccosh}\left (-1+d x^2\right )\right ) \left (\sqrt {2 \pi } \left (a+b \text {arccosh}\left (-1+d x^2\right )\right )^{5/2} \text {erfi}\left (\frac {\sqrt {a+b \text {arccosh}\left (-1+d x^2\right )}}{\sqrt {2} \sqrt {b}}\right ) \left (\cosh \left (\frac {a}{2 b}\right )-\sinh \left (\frac {a}{2 b}\right )\right )+\sqrt {2 \pi } \left (a+b \text {arccosh}\left (-1+d x^2\right )\right )^{5/2} \text {erf}\left (\frac {\sqrt {a+b \text {arccosh}\left (-1+d x^2\right )}}{\sqrt {2} \sqrt {b}}\right ) \left (\cosh \left (\frac {a}{2 b}\right )+\sinh \left (\frac {a}{2 b}\right )\right )+4 \sqrt {b} \left (-b \left (a+b \text {arccosh}\left (-1+d x^2\right )\right ) \cosh \left (\frac {1}{2} \text {arccosh}\left (-1+d x^2\right )\right )-\left (3 b^2+\left (a+b \text {arccosh}\left (-1+d x^2\right )\right )^2\right ) \sinh \left (\frac {1}{2} \text {arccosh}\left (-1+d x^2\right )\right )\right )\right )}{30 b^{7/2} d x \left (a+b \text {arccosh}\left (-1+d x^2\right )\right )^{5/2}} \] Input:
Integrate[(a + b*ArcCosh[-1 + d*x^2])^(-7/2),x]
Output:
(Cosh[ArcCosh[-1 + d*x^2]/2]*(Sqrt[2*Pi]*(a + b*ArcCosh[-1 + d*x^2])^(5/2) *Erfi[Sqrt[a + b*ArcCosh[-1 + d*x^2]]/(Sqrt[2]*Sqrt[b])]*(Cosh[a/(2*b)] - Sinh[a/(2*b)]) + Sqrt[2*Pi]*(a + b*ArcCosh[-1 + d*x^2])^(5/2)*Erf[Sqrt[a + b*ArcCosh[-1 + d*x^2]]/(Sqrt[2]*Sqrt[b])]*(Cosh[a/(2*b)] + Sinh[a/(2*b)]) + 4*Sqrt[b]*(-(b*(a + b*ArcCosh[-1 + d*x^2])*Cosh[ArcCosh[-1 + d*x^2]/2]) - (3*b^2 + (a + b*ArcCosh[-1 + d*x^2])^2)*Sinh[ArcCosh[-1 + d*x^2]/2])))/ (30*b^(7/2)*d*x*(a + b*ArcCosh[-1 + d*x^2])^(5/2))
Time = 0.67 (sec) , antiderivative size = 302, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.125, Rules used = {6425, 6422}
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.
\(\displaystyle \int \frac {1}{\left (a+b \text {arccosh}\left (d x^2-1\right )\right )^{7/2}} \, dx\) |
\(\Big \downarrow \) 6425 |
\(\displaystyle \frac {\int \frac {1}{\left (a+b \text {arccosh}\left (d x^2-1\right )\right )^{3/2}}dx}{15 b^2}-\frac {x}{15 b^2 \left (a+b \text {arccosh}\left (d x^2-1\right )\right )^{3/2}}+\frac {2 x^2-d x^4}{5 b x \sqrt {d x^2} \sqrt {d x^2-2} \left (a+b \text {arccosh}\left (d x^2-1\right )\right )^{5/2}}\) |
\(\Big \downarrow \) 6422 |
\(\displaystyle -\frac {x}{15 b^2 \left (a+b \text {arccosh}\left (d x^2-1\right )\right )^{3/2}}+\frac {\frac {\sqrt {\frac {\pi }{2}} \left (\sinh \left (\frac {a}{2 b}\right )+\cosh \left (\frac {a}{2 b}\right )\right ) \cosh \left (\frac {1}{2} \text {arccosh}\left (d x^2-1\right )\right ) \text {erf}\left (\frac {\sqrt {a+b \text {arccosh}\left (d x^2-1\right )}}{\sqrt {2} \sqrt {b}}\right )}{b^{3/2} d x}+\frac {\sqrt {\frac {\pi }{2}} \left (\cosh \left (\frac {a}{2 b}\right )-\sinh \left (\frac {a}{2 b}\right )\right ) \cosh \left (\frac {1}{2} \text {arccosh}\left (d x^2-1\right )\right ) \text {erfi}\left (\frac {\sqrt {a+b \text {arccosh}\left (d x^2-1\right )}}{\sqrt {2} \sqrt {b}}\right )}{b^{3/2} d x}-\frac {\sqrt {d x^2} \sqrt {d x^2-2}}{b d x \sqrt {a+b \text {arccosh}\left (d x^2-1\right )}}}{15 b^2}+\frac {2 x^2-d x^4}{5 b x \sqrt {d x^2} \sqrt {d x^2-2} \left (a+b \text {arccosh}\left (d x^2-1\right )\right )^{5/2}}\) |
Input:
Int[(a + b*ArcCosh[-1 + d*x^2])^(-7/2),x]
Output:
(2*x^2 - d*x^4)/(5*b*x*Sqrt[d*x^2]*Sqrt[-2 + d*x^2]*(a + b*ArcCosh[-1 + d* x^2])^(5/2)) - x/(15*b^2*(a + b*ArcCosh[-1 + d*x^2])^(3/2)) + (-((Sqrt[d*x ^2]*Sqrt[-2 + d*x^2])/(b*d*x*Sqrt[a + b*ArcCosh[-1 + d*x^2]])) + (Sqrt[Pi/ 2]*Cosh[ArcCosh[-1 + d*x^2]/2]*Erfi[Sqrt[a + b*ArcCosh[-1 + d*x^2]]/(Sqrt[ 2]*Sqrt[b])]*(Cosh[a/(2*b)] - Sinh[a/(2*b)]))/(b^(3/2)*d*x) + (Sqrt[Pi/2]* Cosh[ArcCosh[-1 + d*x^2]/2]*Erf[Sqrt[a + b*ArcCosh[-1 + d*x^2]]/(Sqrt[2]*S qrt[b])]*(Cosh[a/(2*b)] + Sinh[a/(2*b)]))/(b^(3/2)*d*x))/(15*b^2)
Int[((a_.) + ArcCosh[-1 + (d_.)*(x_)^2]*(b_.))^(-3/2), x_Symbol] :> Simp[(- Sqrt[d*x^2])*(Sqrt[-2 + d*x^2]/(b*d*x*Sqrt[a + b*ArcCosh[-1 + d*x^2]])), x] + (Simp[Sqrt[Pi/2]*(Cosh[a/(2*b)] + Sinh[a/(2*b)])*Cosh[ArcCosh[-1 + d*x^2 ]/2]*(Erf[Sqrt[a + b*ArcCosh[-1 + d*x^2]]/Sqrt[2*b]]/(b^(3/2)*d*x)), x] + S imp[Sqrt[Pi/2]*(Cosh[a/(2*b)] - Sinh[a/(2*b)])*Cosh[ArcCosh[-1 + d*x^2]/2]* (Erfi[Sqrt[a + b*ArcCosh[-1 + d*x^2]]/Sqrt[2*b]]/(b^(3/2)*d*x)), x]) /; Fre eQ[{a, b, d}, x]
Int[((a_.) + ArcCosh[(c_) + (d_.)*(x_)^2]*(b_.))^(n_), x_Symbol] :> Simp[(- x)*((a + b*ArcCosh[c + d*x^2])^(n + 2)/(4*b^2*(n + 1)*(n + 2))), x] + (Simp [(2*c*x^2 + d*x^4)*((a + b*ArcCosh[c + d*x^2])^(n + 1)/(2*b*(n + 1)*x*Sqrt[ -1 + c + d*x^2]*Sqrt[1 + c + d*x^2])), x] + Simp[1/(4*b^2*(n + 1)*(n + 2)) Int[(a + b*ArcCosh[c + d*x^2])^(n + 2), x], x]) /; FreeQ[{a, b, c, d}, x] && EqQ[c^2, 1] && LtQ[n, -1] && NeQ[n, -2]
\[\int \frac {1}{{\left (a +b \,\operatorname {arccosh}\left (d \,x^{2}-1\right )\right )}^{\frac {7}{2}}}d x\]
Input:
int(1/(a+b*arccosh(d*x^2-1))^(7/2),x)
Output:
int(1/(a+b*arccosh(d*x^2-1))^(7/2),x)
Exception generated. \[ \int \frac {1}{\left (a+b \text {arccosh}\left (-1+d x^2\right )\right )^{7/2}} \, dx=\text {Exception raised: TypeError} \] Input:
integrate(1/(a+b*arccosh(d*x^2-1))^(7/2),x, algorithm="fricas")
Output:
Exception raised: TypeError >> Error detected within library code: inte grate: implementation incomplete (constant residues)
Timed out. \[ \int \frac {1}{\left (a+b \text {arccosh}\left (-1+d x^2\right )\right )^{7/2}} \, dx=\text {Timed out} \] Input:
integrate(1/(a+b*acosh(d*x**2-1))**(7/2),x)
Output:
Timed out
\[ \int \frac {1}{\left (a+b \text {arccosh}\left (-1+d x^2\right )\right )^{7/2}} \, dx=\int { \frac {1}{{\left (b \operatorname {arcosh}\left (d x^{2} - 1\right ) + a\right )}^{\frac {7}{2}}} \,d x } \] Input:
integrate(1/(a+b*arccosh(d*x^2-1))^(7/2),x, algorithm="maxima")
Output:
integrate((b*arccosh(d*x^2 - 1) + a)^(-7/2), x)
\[ \int \frac {1}{\left (a+b \text {arccosh}\left (-1+d x^2\right )\right )^{7/2}} \, dx=\int { \frac {1}{{\left (b \operatorname {arcosh}\left (d x^{2} - 1\right ) + a\right )}^{\frac {7}{2}}} \,d x } \] Input:
integrate(1/(a+b*arccosh(d*x^2-1))^(7/2),x, algorithm="giac")
Output:
integrate((b*arccosh(d*x^2 - 1) + a)^(-7/2), x)
Timed out. \[ \int \frac {1}{\left (a+b \text {arccosh}\left (-1+d x^2\right )\right )^{7/2}} \, dx=\int \frac {1}{{\left (a+b\,\mathrm {acosh}\left (d\,x^2-1\right )\right )}^{7/2}} \,d x \] Input:
int(1/(a + b*acosh(d*x^2 - 1))^(7/2),x)
Output:
int(1/(a + b*acosh(d*x^2 - 1))^(7/2), x)
\[ \int \frac {1}{\left (a+b \text {arccosh}\left (-1+d x^2\right )\right )^{7/2}} \, dx=\text {too large to display} \] Input:
int(1/(a+b*acosh(d*x^2-1))^(7/2),x)
Output:
( - sqrt(d)*acosh(d*x**2 - 1)**3*int((sqrt(d*x**2 - 2)*sqrt(acosh(d*x**2 - 1)*b + a)*acosh(d*x**2 - 1)*x)/(acosh(d*x**2 - 1)**4*b**4*d*x**2 - 2*acos h(d*x**2 - 1)**4*b**4 + 4*acosh(d*x**2 - 1)**3*a*b**3*d*x**2 - 8*acosh(d*x **2 - 1)**3*a*b**3 + 6*acosh(d*x**2 - 1)**2*a**2*b**2*d*x**2 - 12*acosh(d* x**2 - 1)**2*a**2*b**2 + 4*acosh(d*x**2 - 1)*a**3*b*d*x**2 - 8*acosh(d*x** 2 - 1)*a**3*b + a**4*d*x**2 - 2*a**4),x)*a*b**3*d - sqrt(d)*acosh(d*x**2 - 1)**3*int((sqrt(d*x**2 - 2)*sqrt(acosh(d*x**2 - 1)*b + a)*acosh(d*x**2 - 1)**2*x)/(acosh(d*x**2 - 1)**4*b**4*d*x**2 - 2*acosh(d*x**2 - 1)**4*b**4 + 4*acosh(d*x**2 - 1)**3*a*b**3*d*x**2 - 8*acosh(d*x**2 - 1)**3*a*b**3 + 6* acosh(d*x**2 - 1)**2*a**2*b**2*d*x**2 - 12*acosh(d*x**2 - 1)**2*a**2*b**2 + 4*acosh(d*x**2 - 1)*a**3*b*d*x**2 - 8*acosh(d*x**2 - 1)*a**3*b + a**4*d* x**2 - 2*a**4),x)*b**4*d + 3*acosh(d*x**2 - 1)**3*int((sqrt(acosh(d*x**2 - 1)*b + a)*acosh(d*x**2 - 1)*x**2)/(acosh(d*x**2 - 1)**4*b**4*d*x**2 - 2*a cosh(d*x**2 - 1)**4*b**4 + 4*acosh(d*x**2 - 1)**3*a*b**3*d*x**2 - 8*acosh( d*x**2 - 1)**3*a*b**3 + 6*acosh(d*x**2 - 1)**2*a**2*b**2*d*x**2 - 12*acosh (d*x**2 - 1)**2*a**2*b**2 + 4*acosh(d*x**2 - 1)*a**3*b*d*x**2 - 8*acosh(d* x**2 - 1)*a**3*b + a**4*d*x**2 - 2*a**4),x)*b**4*d**2 - 6*acosh(d*x**2 - 1 )**3*int((sqrt(acosh(d*x**2 - 1)*b + a)*acosh(d*x**2 - 1))/(acosh(d*x**2 - 1)**4*b**4*d*x**2 - 2*acosh(d*x**2 - 1)**4*b**4 + 4*acosh(d*x**2 - 1)**3* a*b**3*d*x**2 - 8*acosh(d*x**2 - 1)**3*a*b**3 + 6*acosh(d*x**2 - 1)**2*...