The deflection y(in m) of a 5.00 m beam as a function of the distance(in m) from one end is y = 0.0008(6 x^2 - 50 x^2). find the value of d^2y/dx^2(the rate of change at which the slope of the beam change), where x = 4.00. d^2y/dx^2 = (type integer or a decimal)