State whether the following equations are ordinary or partial, linear or nonlinear, and give its order. Y(5) - y = x2y (sin(xy))y\"\' + 4xy\' = 0. 2u/ 2x + 2u/ 2y = u. x(y\")3 + (y\')3 - 3y = In x. (x + y)dx + 3x2 - 1)dy = 0 Solution a. ordinary b. non linear c. partial d. ordinary h. non linear.