Asymptotic Error Expansions for Stiff Equations: an Analysis for the Implicit Midpoint and Trapezoidal Rules in the Strongly Stiff Case.
Asymptotic estimates of solutions and their derivatives for n-th order nonhomogeneous ODEs with constant coefficients are obtained, provided the associated characteristic polynomial is (asymptotically) stable. Assuming, additionally, the stability of the so called "shifted polynomials" (see below) to the characteristic one, the estimates can be still improved.
We discuss the asymptotic behaviour of all solutions of the functional differential equation where . The asymptotic bounds are given in terms of a solution of the functional nondifferential equation
The main result of the present paper is obtaining new inequalities for solutions of scalar equation . Except this the interval of transient process is computed, i.e. the time is estimated, during which the given solution reaches an - neighbourhood of origin and remains in it.
Applying methods of plane Power Geometry we are looking for the asymptotic expansions of solutions to the fifth Painlevé equation in the neighbourhood of its singular and nonsingular points.
Asymptotic forms of solutions of half-linear ordinary differential equation are investigated under a smallness condition and some signum conditions on . When , our results reduce to well-known ones for linear ordinary differential equations.