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Consider the following initial value problem dy +1.2y=7e-03x, y(0) =3. dx Use second order Runge-Kutta (RK2) of Ralston method with a step size of 0.5 to find the approximate solution at x =1.5 and calculate &, if the exact solution is given as y(x) : 70 43 -1.2x 9 e e