a) i. Deduce the domain of f(x, y) = x + y-9 x-y (x,y)-(0,0) x+y ii. Evaluate: lim Major Topic 1 - SYSTEMS OF LINEAR EQUATIONS [a b b) Given Q = [] ,B=[ 3 [1 2 0 possibility that A=B, B=C, A=C. Major Topic 1 - SYSTEMS OF LINEAR EQUATIONS AN -1 ], and C = | [2]. discuss the VARIABLE FUNTIONS AN c) If w = xy-y2, where x = sint, y = e, find 5 where t=0. dw dt Major Topic 1 AN - DIFFERNTIATION OF MULTI- 6 5 10 5