True or false:

Question 1 Let f(x, y) =ex-8y, then fx (0, 0) =9. Not yet answered Select one: Marked out of O True 5.00 O False Flag questionQuestion 2 The partial derivative fx(x, y) =10x +300 if the function is f(x, y) 210-30 Not yet yll y10 answered Select one: Marked out of 5.00 O True O False Flag questionQuestion 3 Determine the following limit is true or not. Not yet lim (exty + ( 220 2 - 2y - 4) ) = 0 answered (x,y)-+(1,-1) Marked out of 5.00 Select one: Flag O rue question O FalseQuestion 4 In 4x-5y-3 The function f(x, y) = is continuous at the point (1, 1). Not yet 5x2+4 answered Select one: Marked out of O True 5.00 O False Flag