xy-x-4-y-4-x-4-y-4-and-0-for-origin-then-funtion-is-1-continuous-2-mixpartial-are-not-equal-at-origin-3-limit-at-origin-is-1-

Question Number 28949 by amit96 last updated on 02/Feb/18

x y \frac{x^{4} - y^{4}}{x^{4} + y^{4}} a n d 0 f o r o r i g i n

t h e n f u n t i o n i s

1 . c o n t i n u o u s

2 . m i x p a r t i a l a r e n o t e q u a l a t o r i g i n

3 . l i m i t a t o r i g i n i s 1