Show that the absolute value function f (x) := lx I is continuous at every point c e R.

Chapter 9 ~ The Basic Tools of Finance Present Value: Measuring the Time Value of Money Section Prelude: Because savings can earn interest, a sum of money today is more valuable than the same sum of money in the future due to its lost purchasing power. A person can compare sums from different times using the concept of present value. The present value of any future sum is the amount...