E.g.f. C(x) = ( d/dx Series_Reversion( x - x^3/3 ) )^(1/2).
E.g.f. C(x) = ( d/dx Series_Reversion( sin(x) - sin(x)^3/3 ) )^(1/3).
E.g.f. C(x) = ( d/dx Series_Reversion( sinh(x)*(2 + cosh(2*x))/(3*cosh(x)^3) ) )^(1/4).
E.g.f. C(x) = ( d/dx Series_Reversion( x*sqrt(1+x^2)*(3 + 2*x^2)/(3*(1 + x^2)^2) ) )^(1/5).
E.g.f. C(x) = d/dx Series_Reversion( Integral 1/G(x) dx ) where G(x) = e.g.f. of A281181.
E.g.f. C(x) = ( d/dx Series_Reversion( Integral (1 - x^2) dx ) )^(1/2).
E.g.f. C(x) = ( d/dx Series_Reversion( Integral cos(x)^3 dx ) )^(1/3).
E.g.f. C(x) = ( d/dx Series_Reversion( Integral 1/cosh(x)^4 dx ) )^(1/4).
E.g.f. C(x) = ( d/dx Series_Reversion( Integral 1/(1 + x^2)^(5/2) dx ) )^(1/5).
E.g.f. C(x) = ( d/dx Series_Reversion( Integral G(i*x)^6 dx ) )^(1/6) where G(x) = e.g.f. of A281181.
E.g.f. C(x) and related series S(x) (e.g.f. of A281427) satisfy:
(1.a) C(x)^2 - S(x)^2 = 1.
(1.b) C(x)^2 + S(x)^2 = 1 + Integral 4*C(x)^5*S(x) dx.
Integrals.
(2.a) S(x) = Integral C(x)^5 dx.
(2.b) C(x) = 1 + Integral C(x)^4*S(x) dx.
Exponential.
(3.a) C(x) + S(x) = exp( Integral C(x)^4 dx ).
(3.b) C(x) = cosh( Integral C(x)^4 dx ).
(3.c) S(x) = sinh( Integral C(x)^4 dx ).
Derivatives.
(4.a) S'(x) = C(x)^5.
(4.b) C'(x) = C(x)^4*S(x).
(4.c) (C'(x) + S'(x))/(C(x) + S(x)) = C(x)^4.
(4.d) (C(x)^2 + S(x)^2)' = 4*C(x)^5*S(x).
Explicit Solutions.
(5.a) S(x) = Series_Reversion( Integral 1/(1 + x^2)^(5/2) dx ).
(5.b) C(x)^1 = d/dx Series_Reversion( Integral 1/G(x) dx ) where G(x) = e.g.f. of A281181.
(5.c) C(x)^2 = d/dx Series_Reversion( Integral (1 - x^2) dx ).
(5.d) C(x)^3 = d/dx Series_Reversion( Integral cos(x)^3 dx ).
(5.e) C(x)^4 = d/dx Series_Reversion( Integral 1/cosh(x)^4 dx ).
(5.f) C(x)^5 = d/dx Series_Reversion( Integral 1/(1 + x^2)^(5/2) dx ).
(5.g) C(x)^6 = d/dx Series_Reversion( Integral G(i*x)^6 dx ) )^(1/6) where G(x) = e.g.f. of A281181.
(5.h) C(x)^2 = d/dx Series_Reversion( x - x^3/3 ).
(5.j) C(x)^3 = d/dx Series_Reversion( sin(x) - sin(x)^3/3 ).
(5.j) C(x)^4 = d/dx Series_Reversion( sinh(x)*(2 + cosh(2*x))/(3*cosh(x)^3) ).
(5.k) C(x)^5 = d/dx Series_Reversion( x*sqrt(1+x^2)*(3 + 2*x^2)/(3*(1 + x^2)^2) ).
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