@@ -95,9 +95,9 @@ P 的坐标可以通过 P = (1-n) * A + n * B 得到，进而得到 P 的坐标
$$
Z_n = (1-n) * Z_1 + n * Z_2
-\\
+\\\\
Z_n = \frac{(1-m) * Z_2}{(1-m)*Z_2 + m*Z_1} * Z_1 + \frac{m*Z_1}{(1-m)*Z_2 + m*Z_1} * Z_2
Z_n = \frac{1}{\frac{1-m}{Z_1} + \frac{m}{Z_2}}
