A) F(x,y) = (- sin(2a² – 2y), x sin(2x² – 2y)) Ty B) F(x, y) = xVy² + 1 y² + 1° C) F(x, y) = (cos(x + y) – y sin(x + y), –x sin(x + y)) 2y D) F(r. 9) = ( ) 2x x² + y² + 1' æ² + y² + 1

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