Mathematics, 08.10.2019 23:00, ashley110608

At what points of r2 is the following function continuous? f (x comma y )equals left brace start 2 by 2 matrix 1st row 1st column startfraction xy over 9 x squared plus y squared endfraction 2nd column if (x comma y )not equals (0 comma 0 )2nd row 1st column 0 2nd column if (x comma y )equals (0 comma 0 )endmatrix

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At what points of r2 is the following function continuous? f (x comma y )equals left brace start 2...