Sharp error bounds for turning point expansions

T. M. Dunster, A. Gil, J. Segura
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引用次数: 0

Abstract

Computable and sharp error bounds are derived for asymptotic expansions for linear differential equations having a simple turning point. The expansions involve Airy functions and slowly varying coefficient functions. The sharpness of the bounds is illustrated numerically with an application to Bessel functions of large order.
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拐点展开的尖锐误差界
对于具有简单拐点的线性微分方程的渐近展开式,导出了可计算的和尖锐的误差界。展开式包括Airy函数和慢变系数函数。通过对大阶贝塞尔函数的数值应用说明了边界的清晰性。
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