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Question: please only do acd and show your steps thank you...

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PROBLEMS 1. Find the limit at xo if it exists. (a) /(x, y) xy(x2 + y2), Xo el + e2. (b) f(x, y)- xy/x y), xo (0, 0). (c) /(x) = (1-cos x)/x2, Xo-0. [Hint: lim,-o (sin x)/x = l.] (d) f(x) = 1x-2 le, + lx + 2 le, , xo = 3. (e) f(x, y) = yel + (xy)2/[(xy)2 + (x-y)2]e,, xo (0,0). At which points is each of these functions continuous?Please only do a,c,d and show your steps. Thank you

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