12. [-/1 Points] DETAILS LARCALC12 13.2.010. Find the indicated limit by using the limits lim f(x, y) = 5 and lim g(x, y) = -6. (x, y)- (a, b) (x, y) - (a, b) lim Rx, y) + g(x, y) (x, y)- (a, b) R(x, y) Need Help? Read It Watch It 13. [-/2 Points] DETAILS LARCALC12 13.2.021. Find the limit. arcsin xy lim (x, y) - (0, 8) 1 - xy Discuss the continuity of the function. O continuous for 1 - xy # 0 O continuous everywhere except (0, 0) O continuous for (xy| 0 Need Help? Read It Watch It 14. [-/1 Points] DETAILS LARCALC12 13.2.028. Find the limit (if it exists). (If an answer does not exist, enter DNE.) lim (x, y) - (0, 0) x23 Need Help? Read It 15. [-/2 Points] DETAILS LARCALC12 13.2.042. Discuss the continuity of the function. F(x, y) = 1 _ cos(* + y? ) continuous everywhere continuous except where x~ + y 1 continuous except at (0, 0) O continuous except where x2 + y? > 0 Evaluate the limit of A(x, y) (if it exists) as (x, y) - (0, 0). (If an answer does not exist, enter DNE.)