Pregunta: 1. For f(x, y) = 2x2 – 3y – 4, find fx A) 4x – 3 B) 4x – 4 C) 4x D) x2 – 3 For f(x,y) = (xy – 1), find fx 2. A) 2(xy – 1)y B) 2(xy – 1) C) (y – 1)2 D) y(xy – 1)2 For f(x, y) = 7x2 + y2 ,find fy 3. A) vez y B) V2x + y2 C) 2x/x2 + y2 D) F#2432 For f(x, y) = e2x+3y+1 , find fy 4. A) 3e2x+3y+1 B) (2x + 1)e ex+3y+1 C) e2+3y+1 D) 3ye2x+3y+1 5. For f(x, y) = xº,

1. For f(x, y) = 2x2 – 3y – 4, find fx A) 4x – 3 B) 4x – 4 C) 4x D) x2 – 3 For f(x,y) = (xy – 1), find fx 2. A) 2(xy – 1)y B) 2(xy – 1) C) (y – 1)2 D) y(xy – 1)2 For f(x, y) = 7x2 + y2 ,find fy 3. A) vez y B) V2x + y2 C) 2x/x2 + y2 D) F#2432 For f(x, y) = e2x+3y+1 , find fy 4. A) 3e2x+3y+1 B) (2x + 1)e ex+3y+1 C) e2+3y+1 D) 3ye2x+3y+1 5. For f(x, y) = xº, find fx and fy A) fx = (In x)x"; fy = yxy-1 B) fx = yxy-1; fy = (In x)xy C) fx = (In y)xy ; fy = x2y-2 D) fx = (x – 1)"; fy = xy-1 6. For f(x,y) = x²y + cosy + y sin x find fxx, fyy, fxy, and fyx. A) fxx = 2x – x sin x; fyy - cos x ; fxy = fyx = 2y + cos x B) fxx = 2y - y sin x; fyy = - cosy ; fxy = fyx = 2x + cos x C) fxx = 3y – sin x; fyy = -sin y ; fxy = fyx = 3y + cos y D) fxx = 2y – x sin x; fyy = -cos x ; fxy = fyx = 2x + sin x