2²x¹-4²y4

(z,y) (0,0) 2x² + 4y²

If it exists, enter its value. If it does not exist, enter "DNE".

a. Determine if lim

a sin (a)

dr

a

b. Consider the function f defined as

2²2¹ - 4²¹

2x² + 4y²

f(x, y) =

=

Is f continuous at (0, 0)? [1 point]

Of is continuous at (0,0)

f is not continuous at (0,0)

exists or not. [2 points]

S2

if (x, y) = (0,0)

if (x, y) = (0,0)