An equation which states that two expressions are equal for all values of any variables that occur. Such as
x2 – y2 = (x + y)(x – y)
Imperial System 英制
Conforming to standards or definitions legally established in Britain: relating to a system of measurement in which weight is measured in pounds, length is measured in feet, and volume is measured in pints.
improper fraction 假分数
An arithmetic fraction whose numerator is greater than or equal to the denominator—for example, 5/3, 4/4.
A unit of length in the US Customary and British Imperial systems, equal to 1/12 of a foot (2.54 centimeters).
incircle of triangle 三角形的内切圆
A circle inscribed within a triangle.
included angle 夹角
The angle between the free-stream vector and the longitudinal axis of a body.
To become greater or larger in amount, number, value, etc.
independent event 独立事件
Two events are statistically independent if the probability of their occurring jointly equals the product of their respective probabilities. Also known as stochastic independence.
- A number or symbol, often written as a subscript or superscript to a mathematical expression, that indicates an operation to be performed, an ordering relation, or a use of the associated expression. In the equation 42 = 16, the number 2 is an index.
- Computers: a value that identifies and is used to locate a particular element within a data array or table.
A mathematical statement indicating that two quantities are not equal, represented by the symbol <, >, or ≠, meaning less than, greater than, and not equal to.