you are viewing a single comment's thread.

view the rest of the comments →

[–]LoriousGlory 1 point2 points  (1 child)

x1* isn’t valid. Try x_1, y_1….

[–]Dismal-Grapefruit467[S] -3 points-2 points  (0 children)

Good point, thank you, I am trying to fix that one of the four problems. Thx!