\(\int \frac {1}{\arcsin (a x)^{7/2}} \, dx\) [117]

Optimal result

Integrand size = 8, antiderivative size = 105 \[ \int \frac {1}{\arcsin (a x)^{7/2}} \, dx=-\frac {2 \sqrt {1-a^2 x^2}}{5 a \arcsin (a x)^{5/2}}+\frac {4 x}{15 \arcsin (a x)^{3/2}}+\frac {8 \sqrt {1-a^2 x^2}}{15 a \sqrt {\arcsin (a x)}}+\frac {8 \sqrt {2 \pi } \operatorname {FresnelS}\left (\sqrt {\frac {2}{\pi }} \sqrt {\arcsin (a x)}\right )}{15 a} \]

[Out]

4/15*x/arcsin(a*x)^(3/2)+8/15*FresnelS(2^(1/2)/Pi^(1/2)*arcsin(a*x)^(1/2))*2^(1/2)*Pi^(1/2)/a-2/5*(-a^2*x^2+1)
^(1/2)/a/arcsin(a*x)^(5/2)+8/15*(-a^2*x^2+1)^(1/2)/a/arcsin(a*x)^(1/2)

Rubi [A] (verified)

Time = 0.10 (sec) , antiderivative size = 105, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.625, Rules used = {4717, 4807, 4809, 3386, 3432} \[ \int \frac {1}{\arcsin (a x)^{7/2}} \, dx=\frac {8 \sqrt {1-a^2 x^2}}{15 a \sqrt {\arcsin (a x)}}-\frac {2 \sqrt {1-a^2 x^2}}{5 a \arcsin (a x)^{5/2}}+\frac {8 \sqrt {2 \pi } \operatorname {FresnelS}\left (\sqrt {\frac {2}{\pi }} \sqrt {\arcsin (a x)}\right )}{15 a}+\frac {4 x}{15 \arcsin (a x)^{3/2}} \]

[In]

Int[ArcSin[a*x]^(-7/2),x]

[Out]

(-2*Sqrt[1 - a^2*x^2])/(5*a*ArcSin[a*x]^(5/2)) + (4*x)/(15*ArcSin[a*x]^(3/2)) + (8*Sqrt[1 - a^2*x^2])/(15*a*Sq
rt[ArcSin[a*x]]) + (8*Sqrt[2*Pi]*FresnelS[Sqrt[2/Pi]*Sqrt[ArcSin[a*x]]])/(15*a)

Rule 3386

Int[sin[(e_.) + (f_.)*(x_)]/Sqrt[(c_.) + (d_.)*(x_)], x_Symbol] :> Dist[2/d, Subst[Int[Sin[f*(x^2/d)], x], x,
Sqrt[c + d*x]], x] /; FreeQ[{c, d, e, f}, x] && ComplexFreeQ[f] && EqQ[d*e - c*f, 0]

Rule 3432

Int[Sin[(d_.)*((e_.) + (f_.)*(x_))^2], x_Symbol] :> Simp[(Sqrt[Pi/2]/(f*Rt[d, 2]))*FresnelS[Sqrt[2/Pi]*Rt[d, 2
]*(e + f*x)], x] /; FreeQ[{d, e, f}, x]

Rule 4717

Int[((a_.) + ArcSin[(c_.)*(x_)]*(b_.))^(n_), x_Symbol] :> Simp[Sqrt[1 - c^2*x^2]*((a + b*ArcSin[c*x])^(n + 1)/
(b*c*(n + 1))), x] + Dist[c/(b*(n + 1)), Int[x*((a + b*ArcSin[c*x])^(n + 1)/Sqrt[1 - c^2*x^2]), x], x] /; Free
Q[{a, b, c}, x] && LtQ[n, -1]

Rule 4807

Int[(((a_.) + ArcSin[(c_.)*(x_)]*(b_.))^(n_)*((f_.)*(x_))^(m_.))/Sqrt[(d_) + (e_.)*(x_)^2], x_Symbol] :> Simp[
((f*x)^m/(b*c*(n + 1)))*Simp[Sqrt[1 - c^2*x^2]/Sqrt[d + e*x^2]]*(a + b*ArcSin[c*x])^(n + 1), x] - Dist[f*(m/(b
*c*(n + 1)))*Simp[Sqrt[1 - c^2*x^2]/Sqrt[d + e*x^2]], Int[(f*x)^(m - 1)*(a + b*ArcSin[c*x])^(n + 1), x], x] /;
FreeQ[{a, b, c, d, e, f, m}, x] && EqQ[c^2*d + e, 0] && LtQ[n, -1]

Rule 4809

Int[((a_.) + ArcSin[(c_.)*(x_)]*(b_.))^(n_.)*(x_)^(m_.)*((d_) + (e_.)*(x_)^2)^(p_.), x_Symbol] :> Dist[(1/(b*c
^(m + 1)))*Simp[(d + e*x^2)^p/(1 - c^2*x^2)^p], Subst[Int[x^n*Sin[-a/b + x/b]^m*Cos[-a/b + x/b]^(2*p + 1), x],
x, a + b*ArcSin[c*x]], x] /; FreeQ[{a, b, c, d, e, n}, x] && EqQ[c^2*d + e, 0] && IGtQ[2*p + 2, 0] && IGtQ[m,
0]

Rubi steps \begin{align*} \text {integral}& = -\frac {2 \sqrt {1-a^2 x^2}}{5 a \arcsin (a x)^{5/2}}-\frac {1}{5} (2 a) \int \frac {x}{\sqrt {1-a^2 x^2} \arcsin (a x)^{5/2}} \, dx \\ & = -\frac {2 \sqrt {1-a^2 x^2}}{5 a \arcsin (a x)^{5/2}}+\frac {4 x}{15 \arcsin (a x)^{3/2}}-\frac {4}{15} \int \frac {1}{\arcsin (a x)^{3/2}} \, dx \\ & = -\frac {2 \sqrt {1-a^2 x^2}}{5 a \arcsin (a x)^{5/2}}+\frac {4 x}{15 \arcsin (a x)^{3/2}}+\frac {8 \sqrt {1-a^2 x^2}}{15 a \sqrt {\arcsin (a x)}}+\frac {1}{15} (8 a) \int \frac {x}{\sqrt {1-a^2 x^2} \sqrt {\arcsin (a x)}} \, dx \\ & = -\frac {2 \sqrt {1-a^2 x^2}}{5 a \arcsin (a x)^{5/2}}+\frac {4 x}{15 \arcsin (a x)^{3/2}}+\frac {8 \sqrt {1-a^2 x^2}}{15 a \sqrt {\arcsin (a x)}}+\frac {8 \text {Subst}\left (\int \frac {\sin (x)}{\sqrt {x}} \, dx,x,\arcsin (a x)\right )}{15 a} \\ & = -\frac {2 \sqrt {1-a^2 x^2}}{5 a \arcsin (a x)^{5/2}}+\frac {4 x}{15 \arcsin (a x)^{3/2}}+\frac {8 \sqrt {1-a^2 x^2}}{15 a \sqrt {\arcsin (a x)}}+\frac {16 \text {Subst}\left (\int \sin \left (x^2\right ) \, dx,x,\sqrt {\arcsin (a x)}\right )}{15 a} \\ & = -\frac {2 \sqrt {1-a^2 x^2}}{5 a \arcsin (a x)^{5/2}}+\frac {4 x}{15 \arcsin (a x)^{3/2}}+\frac {8 \sqrt {1-a^2 x^2}}{15 a \sqrt {\arcsin (a x)}}+\frac {8 \sqrt {2 \pi } \operatorname {FresnelS}\left (\sqrt {\frac {2}{\pi }} \sqrt {\arcsin (a x)}\right )}{15 a} \\ \end{align*}

Mathematica [C] (verified)

Result contains complex when optimal does not.

Time = 0.20 (sec) , antiderivative size = 143, normalized size of antiderivative = 1.36 \[ \int \frac {1}{\arcsin (a x)^{7/2}} \, dx=\frac {2 e^{i \arcsin (a x)} \left (-3-2 i \arcsin (a x)+4 \arcsin (a x)^2\right )-8 \sqrt {-i \arcsin (a x)} \arcsin (a x)^2 \Gamma \left (\frac {1}{2},-i \arcsin (a x)\right )+e^{-i \arcsin (a x)} \left (-6+4 i \arcsin (a x)+8 \arcsin (a x)^2+8 e^{i \arcsin (a x)} (i \arcsin (a x))^{5/2} \Gamma \left (\frac {1}{2},i \arcsin (a x)\right )\right )}{30 a \arcsin (a x)^{5/2}} \]

[In]

Integrate[ArcSin[a*x]^(-7/2),x]

[Out]

(2*E^(I*ArcSin[a*x])*(-3 - (2*I)*ArcSin[a*x] + 4*ArcSin[a*x]^2) - 8*Sqrt[(-I)*ArcSin[a*x]]*ArcSin[a*x]^2*Gamma
[1/2, (-I)*ArcSin[a*x]] + (-6 + (4*I)*ArcSin[a*x] + 8*ArcSin[a*x]^2 + 8*E^(I*ArcSin[a*x])*(I*ArcSin[a*x])^(5/2
)*Gamma[1/2, I*ArcSin[a*x]])/E^(I*ArcSin[a*x]))/(30*a*ArcSin[a*x]^(5/2))

Maple [A] (verified)

Time = 0.04 (sec) , antiderivative size = 110, normalized size of antiderivative = 1.05

method	result	size
default	\(\frac {\sqrt {2}\, \left (8 \arcsin \left (a x \right )^{3} \pi \,\operatorname {FresnelS}\left (\frac {\sqrt {2}\, \sqrt {\arcsin \left (a x \right )}}{\sqrt {\pi }}\right )+4 \arcsin \left (a x \right )^{\frac {5}{2}} \sqrt {2}\, \sqrt {\pi }\, \sqrt {-a^{2} x^{2}+1}+2 \arcsin \left (a x \right )^{\frac {3}{2}} \sqrt {2}\, \sqrt {\pi }\, a x -3 \sqrt {2}\, \sqrt {\arcsin \left (a x \right )}\, \sqrt {\pi }\, \sqrt {-a^{2} x^{2}+1}\right )}{15 a \sqrt {\pi }\, \arcsin \left (a x \right )^{3}}\)	\(110\)

[In]

int(1/arcsin(a*x)^(7/2),x,method=_RETURNVERBOSE)

[Out]

1/15/a*2^(1/2)/Pi^(1/2)/arcsin(a*x)^3*(8*arcsin(a*x)^3*Pi*FresnelS(2^(1/2)/Pi^(1/2)*arcsin(a*x)^(1/2))+4*arcsi
n(a*x)^(5/2)*2^(1/2)*Pi^(1/2)*(-a^2*x^2+1)^(1/2)+2*arcsin(a*x)^(3/2)*2^(1/2)*Pi^(1/2)*a*x-3*2^(1/2)*arcsin(a*x
)^(1/2)*Pi^(1/2)*(-a^2*x^2+1)^(1/2))

Fricas [F(-2)]

Exception generated. \[ \int \frac {1}{\arcsin (a x)^{7/2}} \, dx=\text {Exception raised: TypeError} \]

[In]

integrate(1/arcsin(a*x)^(7/2),x, algorithm="fricas")

[Out]

Exception raised: TypeError >>  Error detected within library code:   integrate: implementation incomplete (co
nstant residues)

Sympy [F]

\[ \int \frac {1}{\arcsin (a x)^{7/2}} \, dx=\int \frac {1}{\operatorname {asin}^{\frac {7}{2}}{\left (a x \right )}}\, dx \]

[In]

integrate(1/asin(a*x)**(7/2),x)

[Out]

Integral(asin(a*x)**(-7/2), x)

Maxima [F(-2)]

Exception generated. \[ \int \frac {1}{\arcsin (a x)^{7/2}} \, dx=\text {Exception raised: RuntimeError} \]

[In]

integrate(1/arcsin(a*x)^(7/2),x, algorithm="maxima")

[Out]

Exception raised: RuntimeError >> ECL says: expt: undefined: 0 to a negative exponent.

Giac [F]

\[ \int \frac {1}{\arcsin (a x)^{7/2}} \, dx=\int { \frac {1}{\arcsin \left (a x\right )^{\frac {7}{2}}} \,d x } \]

[In]

integrate(1/arcsin(a*x)^(7/2),x, algorithm="giac")

[Out]

integrate(arcsin(a*x)^(-7/2), x)

Mupad [F(-1)]

Timed out. \[ \int \frac {1}{\arcsin (a x)^{7/2}} \, dx=\int \frac {1}{{\mathrm {asin}\left (a\,x\right )}^{7/2}} \,d x \]

[In]

int(1/asin(a*x)^(7/2),x)

[Out]

int(1/asin(a*x)^(7/2), x)