Plese write down the code This exercise will enable you to see the effect of different scales of surface profile on measured values of Ra. (a) First construct a dataset which we will use as the profile (with a programme such as Matlab or by using a spreadsheet). The profile is made up of the superposition of two sinusoidal waves according to the following equation: y(x) = Ai sin (m)-A, sin (2nr where y(r) is the surface height at a distance x from the origin, Ai and A2 are the 2rx LI amplitudes, and L1 and L2 are the wavelengths of the two waves. Plot a graph of the surface profile from x-0 to 10 mm (with a spacing Ar between the data points of 0.001 mm) with the following parameters: A,-100) m; A2-5 m; L,-20 mm; L,-0.1 mm