Contact a few information systems professionals and ask them what types of operating systems they use in their organizations. (Alternatively, you may browse through articles in business periodicals for the same information.) Fill in the table with information about the operating systems used
in four different organizations. Also, give reasons for each company's choice of operating systems.

Using least squares fitting, you are to fit the data sets to the following models and solve for the parameters ai , where i is the index of the parameter. the input/output data for the systems are linked in the bblearn site. for each of the systems use matlab to plot the supplied data vs. the model fit on one plot. include your code in the solutions. (a) linear fit "lineardata. mat" y=a1x^3 + a2x^2 + a3x + a4 (b) plant fit "plantdata. mat g(s) = a1/(s + a2)