This function Y is called the yield curve, and it is often, but not always, an increasing function of t. Yield curves are used by fixed income analysts, who analyze bonds and related securities, to understand conditions in financial markets and to seek trading opportunities.
Laughing Waters Beach, Ocho Rios, St. Ann, Jamaica (James Bond and Honey Rider meet in the classic scene when Honey walks out of the ocean)
For us, it's Bond, James Bond, the British secret agent who set an example no teenage boy could resist, slipping through kitchen doors, wallowing in ditches by day, and miraculously coming up clean to tango with Octopussy at cocktail hour. James Bond was born on Jamaica, in tiny Oracabessa in the parish of St. Mary. It was here that Ian Fleming brought 007 to life, in 1952, writing Casino Royale, the first in the series, by lamplight in a ranch overlooking the sea.