dt aw aw Q1: (25M.): Select the correct answer (or answers) for each the following questions: 1. The general solution of differential equation 4"+ 4y = 22 is: a) y = (1 + (2x)e-2x b) y =(+ c2x) (2x c) y = ( + C2X + C3x) (2x d) y = |e2x + cze-2x 2. The D. Eq. aya + 3w sin (xy) is classified as: ay a) First order linear ordinary D. Eq. b) Second order linear ordinary D. Eq. c) Second order linear partial D. Eq. d) First order linear partial D. Eq. 3. The differential equation + p(x)y = Q(x)y" is called Bernoulli's equation where n belong: a) nez b) nel c)nER d) non of these 4. when transform the not exact D. Eq. M(x,y)dx + N(x, y)dy = 0 to exact D. Eq. we use the formula 4 then they is a function respect to: a) variable x b) variable y c) variables x and y d) non of these 5. The method of solution of the D. Eq. (x2 - 2y)dx + xdy = 0 is: a) exact b) homogenous c) separable d) non of these N-My M