Question: 2) Use a two-path test to prove that lim yz sin2 x (x,y) -(0,0) x4+14 does not exist. 3) Show that fxyz = fyxz for

2) Use a two-path test to prove that lim yz sin2

2) Use a two-path test to prove that lim yz sin2 x (x,y) -(0,0) x4+14 does not exist. 3) Show that fxyz = fyxz for f (x, y, z) = xy?e -xz

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