方程sinπx＋cosπx=（-1）^[x]的有理数解

The Rational Number Solutions of the Equation sinπx＋cosπx=（-1）^[x]

本文给出了方程sinπx+cosπx=(-1)[x]的所有有理数解x,其中[x]是x的整数部分.

In this papre, all rational number solutions x of the equation sinπx＋cosπx=（-1）^[x] are given, where [x] is the integeral part of x.