Hi, I am in difficulty when I kept trying to do these questions.

Could you give me a help to solve these questions?

Thank you so much.

Consider the function :..\"2+1.r2 ay) = { W' my?\" 0, my: a) Is the function continuous at (U, 0)? Demonstrate why or why not. b) Do both partials exist at (D, 0)? Demonstrate why or why not. If they exist, use the limit definition to compute them. o} Is the function differentiable at (0, 0)? Demonstrate why or why not