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

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form

it would be a on edgenuit y

the diagram below is your final answer

3000000000000000000000