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 onlyUpgrade your vehicle with 4D Number Plates from Bespoke Plates. Available in 3MM, 5MM, 3MM Gel, and 5MM Gel finishes, these durable, customisable plates add a premium touch. Join over 100,000 satisfied customers !