Find the least squares polynomial of degree one for the data in the following table. Then write the matrix least squares problem and its solution in the matrix form(do not evaluate) to fit the data...

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Extracted text: Find the least squares polynomial of degree one for the data in the following table. Then write the matrix least squares problem and its solution in the matrix form(do not evaluate) to fit the data with a function of the form f(x) = ao + a1x + az sin x + ɑ4 cos x. X; |0.2 0.3 0.6 0.9 1.1 1.3 Yi 0.050446| 0.098426 0.33277 0.72660 1.0972 1.5697