A new fourth-order method for y″=g(x)y+r(x)

✍ Scribed by John P. Coleman

• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 636 KB
• Volume: 19
• Category: Article
• ISSN: 0010-4655
• DOI: 10.1016/0010-4655(80)90049-1

✦ Synopsis

A numerical method is proposed for solving linear differential equations of second order without first derivatives. The new method is superior to de Vogelaere's for this class of equations, and for non-linear equations it becomes an implicit extension of de Vogelaere's method. The global truncation error at a fixed steplength h is bounded by a term of order h 4, and the interval of absolute stability is [-2.4,0]. The work of Coleman and Mohamed (1978) is readily adapted to provide truncation error estimates which can be used for automatic error control. It is suggested that the new method should be used in preference to de Vogelaere's for linear equations, and in particular to solve the radial Schrodinger equation. the radial Schrodinger equation.