Also notice that we require the function to be continuous in the interval of integration. This was also a requirement in the definition of the definite integral. We didnât make a big deal about this in the last section. In this section however, we will need to keep this condition in mind as we do our evaluations.
A metallic solid or liquid that is composed of a homogeneous mixture of two or more metals or of metals and nonmetal or metalloid elements, usually for the purpose of imparting or increasing specific characteristics or properties: Brass is an alloy of zinc and copper. 2. A mixture; an amalgam: Television news has ...
We need to alloy it - that is, to mix it with other metals to make it harder and more rigid for use in jewelry. Pure gold is 24 karat and, in an alloy, the parts out of 24 that are gold are said to be it's karat. So 14 karat gold is 14 parts gold and ten parts other metals or 58.5% gold. To make karat alloys of yellow gold, the other metals are silver and copper, a mixture which retains the yellow color. To make white gold, nickel or palladium are primarily used instead of the copper and silver blend.