In this case, the term falls between zero and one.
Consider the *infinite* geometric series summation:

Since the infinite series summation approaches a finite constant *C*
and since each term in the series is positive,
the *finite* series summation in Equation
is bounded from above by *C*:

Substituting this result into Equation and making use of the fact that , and therefore , gives

Copyright © 1997 by Bruno R. Preiss, P.Eng. All rights reserved.