The first derivative can be used to find the relative minimum and relative maximum values of a function over an open interval. These values are often called extreme values or extrema (plural form). A point is considered a minimum point if the value of the function at that point is less than the function values for all x-values in the interval.
Sancerre is a medieval hilltop town (ville), commune and canton in the Cher department of central France overlooking the Loire River.ancerre is a medieval hilltop town (ville), commune and canton in the Cher department of central France overlooking the Loire River.
Sancerre is located at the very eastern edge of Loire Valley's main vineyard area, hundreds of miles from the region's westernmost vineyards. It is in fact closer to the Cote d'Or in Burgundy than to the Loire's other key wine districts, Anjou and Touraine.he classic Sancerre wine is white, bracingly acidic, and has pungent aromas of gooseberries, grass, nettles, and a hint of stony minerality.