order4dWe can solve a second order differential equation of the type: d 2 ydx 2 + P(x) dydx + Q(x)y = f(x). where P(x), Q(x) and f(x) are functions of x, by using: Undetermined Coefficients which onlyOrder4d. 94 likes. Karang taruna kedusunan yaitu suatu perkumpulan yg melingkupi satu kedusunan..