Use the method of Frobenius to find the first four nonzero terms in the series expansion about x = 0 for a solution to the given linear third-order equation for x>0. 8xy" + 14x y" - 3xy' - (x- 3)y = 0 What are the first four terms for the series? y(x) = (Type an expression in terms of a, that includes all terms up to order 4.) %3D +...