The richest sources of beta-carotene are yellow, orange, and green leafy fruits and vegetables (such as carrots, spinach, lettuce, tomatoes, sweet potatoes, broccoli, cantaloupe, and winter squash). In general, the more intense the color of the fruit or vegetable, the more beta-carotene it has.eta-carotene is a pigment found in plants that gives them their color. The name beta-carotene is derived from the Latin name for carrot. It gives yellow and orange fruits and vegetables their rich hues. Beta-carotene is also used to color foods such as margarine.
The integral sign â« represents integration. The symbol dx (explained below) indicates the variable of integration, x. The function f(x) which is to be integrated is called the integrand. In correct mathematical typography, the dx is separated from the integrand by a space (as shown).iven a function f of a real variable x and an interval [a, b] of the real line, the definite integral. is defined informally as the signed area of the region in the xy-plane that is bounded by the graph of f, the x-axis and the vertical lines x = a and x = b.
Given a function f of a real variable x and an interval [a, b] of the real line, the definite integral. is defined informally as the signed area of the region in the xy-plane that is bounded by the graph of f, the x-axis and the vertical lines x = a and x = b.