Texts: questions 13, 15, 17
+Ny = 0, y = xyb
12.xy + xy
any rect-
value problem. 13. 1 + xy = 0; y = 0 14. 3y + 4xy = 0; y1 = 6 15. 2y^3 - 2 + 3xyy = 0; y3 = 1 16. y1 + x + 2xy = 0; y4 = 6 BTOY
function
function
g factor b. Find
18. 2y1 + x + xy = 0; y2 = 3 (Hint: try = xaebx^2
rential or, (c) ined), 'eren-
19. sinx - y + cosx - y - cosx - yy = 0; y0 = 7/6 20. 3xy + y + 2xyy = 0; y2 = 1 21. Show that ultinle ofaninte