Pregunta: 3-16 . Find the limit, if it exists, or show that the limit does not exist. 3 . lim (5x3 – xy2) (x, y) (1.2)" 4. lim e * cos(x + y) (x, y) (1.-1) x – 4y² 5. lim - (x,y)—(0,0) x2 + 2y? (x, y) (0,0) x4 + y4 y² sin²x 7. lim (x, y)—(0,0) x4 + y4 (x, y) (1,0) (x - 1)2 + y2 lim Dy cos²x 6. 8. lim - XY-Y 9. lim xy lim xºsiny 10. (x, y) → (0,0) x2 + y2 (x, y) (0,0)

3-16 . Find the limit, if it exists, or show that the limit does not exist. 3 . lim (5x3 – xy2) (x, y) (1.2)" 4. lim e * cos(x + y) (x, y) (1.-1) x – 4y² 5. lim - (x,y)—(0,0) x2 + 2y? (x, y) (0,0) x4 + y4 y² sin²x 7. lim (x, y)—(0,0) x4 + y4 (x, y) (1,0) (x - 1)2 + y2 lim Dy cos²x 6. 8. lim - XY-Y 9. lim xy lim xºsiny 10. (x, y) → (0,0) x2 + y2 (x, y) (0,0) x2 + 2y2 . x²ye 11. lim - (x,y)(0,0) x4 + 4y2 Xy4 12. lim - (x, y) (0,0) x2 + y 8 13. lim (x,y) → (0,0) x² + y² x² + y² +1-1 (x, y) (0,0) x2 + y2 xy + yz + xz? 5. lim (x, y, z) (0,0,0) x2 + y2 + 24 yz 16 lim (x, y, z) (0.0, 0) x2 + 4y2 + 922