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(9) Let f(x,y) = 1+ 4- y2. Evaluate f(3,1), find and sketch the domain of f. (10) A thin metal plate, located in the xy-plane

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4 =lim 7-907 Info? 172 com ( incr)] lim ro Ya? Cor 2) r- ot dr d - 2772 % 2 (27) lim rot tim [-22 -2/3 8 of von CM2+ y2) In C22 lim (12ty2) in Cu²+ y²) (ny)(0,0) im (2+2) in /v1+ y) = (0? +o) in 10t0%) (ny) 10o) (O)(0) undefined First rewnite the giv2 with this is equation ellipse 100 1 and 9?- b² 50 - - a 100 -1 c and bi $ Y TOUM)=C In the case the level cuores present fu9) Giren fclusy) 13,1) I+s4-42 it 4-12 it 3 = 2.732 The not function of is defined when 4-y2 zo (boot square root of negative

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