三角函数与双曲函数的统一性

复数二元方程ｚ＾２＋ｗ＾２＝１包含了圆ｘ＾２＋ｙ＾２＝１及双曲线ｘ＾２－ｙ＾２＝１，用二阶常微分方程求ｚ＾２＋ｗ＾２＝１参数解，然后对这个参数解析出限制，既可得到三角函数的余弦与余弦，又可得到双曲余弦与双曲正弦，仿此做法，由旋转变变换导出双曲变换，再用待定系数的方法推出狭义相对论的洛伦兹变换公式。

The Conformity of Triangle Function with Bicurve Function

Complex binary equation z2+w2=1 contains x2+y2 = 1 and x2-y2= 1. By solving equation z2+w2=1 subjected to some conditions through th second order differential equation,wenot only get sine and cosine of triagle function, but also bicurve sine and bicuuve consine. Imitation this way,we can deduce bicurve spinning transform form of Einstein's special theoryof relativity.