Choose 3 exact differential equations Choose 3 linear differential equations.ry3 a. et dy + =0) k. (r + cos0 - sin0) dr + r (- sine - cos#) de = 0 y+1 b. vdu + (2u + 1 - wuv) du = 0 1. x sin () - ycos ()] der + x cos (2 ) dy = 0 c. (rty+]) dx - (y- x+3) dy =0 m. 2 (u' + uv) du + (u' + v?) dv = 0; when u = -1, v = 1 d. ryei de + (13 - clev ) dy = 0 n. y' de - r' dy = 0; when x = 2, y = 1 dy e. Aydr + rdy = 0 O. dx = re-; when r = 0, y = 1 f. (x3 + y)) dax + 3xy- dy = 0 p. rdy +ydr = r'ydr; when r = 2, y = -1 g. (wsina + sina) dw + 2w2 cosa da = 0 q. 2ry dy = r' - 2y'; when x = 2, y = 1 h. 2 - + x" cosy = 0 dy y r. ydr + (my + x - 3y) dy =0; when x = 1, y =0 i. dr + [2r cot # + sin (20)] de = 0 s. (r ty'- 3y) dax + 3x (y) - 1) dy =0; when x = 0, y = -1 dr I- y j. dy ; when r = 1, y = 1 t. A- + Bs = C; when t = 0, s = 0, A, B.CER - {0}