The rectier function ()i 0 ifac 7(3) and 5(55) g r(:i:) for all m, and p(a:) and 9'(2:) are both continuous. 2. (a) (b) Explain why p(cc) approximates r(.r) well for large (positive and negative) values of 3:. Explain why 5(a) approximates r(:r) well for large (positive and negative) values of as. 3. Where is p(a:) the worst approximation to rec)? In other words, where is the vertical distance between the two functions maximized? 4. (a) On the interval (foo, 0), where is s(:1:) the worst approximation to r(:c)? You may not be able to determine an exact cpsvalue, but nd the integer a.