See proof please:
http://img42.imageshack.us/img42/1897/e9kg.png
As you can see , Graph must be as y=0 (after cancellation). But I've got 2 different graphs and both of them are not a line y=0. Why???
See proof please:
http://img42.imageshack.us/img42/1897/e9kg.png
As you can see , Graph must be as y=0 (after cancellation). But I've got 2 different graphs and both of them are not a line y=0. Why???