3. Given the function f (2) = In(1 - 2) 1 - 2x2 (a). Find the first four terms in the Maclaurin series. (b). Find the radius of convergence of the Maclaurin series. (c). If we use four terms in the Maclaurin series to approximate the function f(x) within the radius of convergence, estimate the error of approximation (that is, the remainder of the polynomial expansion)