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 an appellation located in the so-called Upper Loire -- the eastern end of the Loire Valley. It is best known for its brisk, mineral white wines, made from the Sauvignon Blanc grape, though red and rose Sancerre, made from Pinot Noir, is increasingly popular.Just as in Chablis, the chalky-white Kimmeridgian soil is what really sets the wines apart from those in nearby appellations.t is best known for its brisk, mineral white wines, made from the Sauvignon Blanc grape, though red and rose Sancerre, made from Pinot Noir, is increasingly popular. Just as in Chablis, the chalky-white Kimmeridgian soil is what really sets the wines apart from those in nearby appellations.