An inflection point is a point on a curve at which the sign of the curvature (i.e., the concavity) changes. Inflection points may be stationary points, but are not local maxima or local minima. For example, for the curve plotted above, the point is an inflection point. The first derivative test can sometimes distinguish inflection points from extrema for differentiable functions . The second derivative test is also useful. A necessary condition for to be an inflection point is . A sufficient condition requires and to have opposite signs in the neighborhood of (Bronshtein and Semendyayev 2004, p. 231).
Rice vermicelli are thin rice-flour noodles common in Chinese, Thai, Vietnamese, and other Southeast Asian cuisines, where they are often used in stir-fries, soups, spring rolls, and salads. Don't confuse rice vermicelli with cellophane noodles, another thin Asian noodle that's made with mung bean starch.
History [edit]. Falooda is a version of Persian dessert known as faloodeh and is believed to have brought to India during the Mughal period. Vermicelli used for preparing faloodeh is made from arrowroot whereas vermicelli used in the Indian version is usually made from wheat. The Mauritian version is called alouda, which is a variation of the word falooda, and the beverage is almost identical in ingredients and flavour. 2  South Africa also has a variant known by the same name, and is often served as a milkshake to be consumed with or after a meal.