Theorem

$\underset{t\to \infty }{\lim }\left(x_i\left(t\right)-x_j\left(t\right)\right)=X_i-X_j$

$\underset{t\to \infty }{\lim }\left(y_i\left(t\right)-y_j\left(t\right)\right)=Y_i-Y_j$

value

~0

~−0.5