Expressions
A mathematical expression is a sequence of symbols which can be evaluated. For example, if the symbols represent numbers, the expressions are evaluated according to a conventional order of operations which provides for calculation, if possible, of any expressions within parentheses, followed by any exponents and roots, then multiplications and divisions and finally any additions or subtractions, all done from left to right. In a computer language, these rules are implemented by the compilers. For more on expression evaluation, see the computer science topics: eager evaluation, lazy evaluation, and evaluation operator.
Read more about this topic: Mathematical Notation
Famous quotes containing the word expressions:
“Each child has his own individual expressions to offer to the world. That expression can take many forms, from artistic interests, a way of thinking, athletic activities, a particular style of dressing, musical talents, different hobbies, etc. Our job is to join our children in discovering who they are.”
—Stephanie Martson (20th century)
“Compare the history of the novel to that of rock ‘n’ roll. Both started out a minority taste, became a mass taste, and then splintered into several subgenres. Both have been the typical cultural expressions of classes and epochs. Both started out aggressively fighting for their share of attention, novels attacking the drama, the tract, and the poem, rock attacking jazz and pop and rolling over classical music.”
—W. T. Lhamon, U.S. educator, critic. “Material Differences,” Deliberate Speed: The Origins of a Cultural Style in the American 1950s, Smithsonian (1990)
“Let it be signified to me through any channel ... that the possession of the Floridas would be desirable to the United States, and in sixty days it will be accomplished.
...penned in the language of truth, and divested of those expressions of servility which would persuade his majesty that we are asking favors and not rights.”
—Thomas Jefferson (1743–1826)