9) Chapterty, Question 44 (modified): Use Lagrange's technique to calculate the quantities P(x,i), p(x), Q(x,i) and q for the function f (x) = vx and thus determine the first three terms of its power series representation. The idea here is easy enough, but simplification is tricky: you'll want to make use of the fact that (Va + vb) can be rationalized by multiplying it by (va - vb). (4points)