I only need help with the middle one, which is (2, -4)

NOTE: complex numbers ("i") is not allowed

At each of the points (13, 2), (2, -4), ( 3, 3 ), evaluate the function h(x, y) = Vx-12 x-y or indicate that the function is undefined there. (Use symbolic notation and fractions where needed. If the function is undefined at the given point, type UNDEFINED.) h( 13, 2) = 3 11 h(2, -4) = n ( 3 , 8 ) = UNDEFINED