Recent content by mathnovice1

RGV - thanks for the quick reply. Your response is very helpful to me. Can you elaborate a bit on the rationale behind letting y=v as well as how we know that the following is true:

Homework Statement The statement that the simple surface F has gradient at the ordered pair ((x,y),F(x,y)) of F means that there exists only one ordered number pair (p,q) such that if c is a positive number then there exists a rectangular segment , S, containing (x,y) such that, if (u,v) is in...