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:
“The expressions of the poet cannot be analyzed; his sentence is one word, whose syllables are words. There are indeed no words quite worthy to be set to his music. But what matter if we do not hear the words always, if we hear the music?”
—Henry David Thoreau (1817–1862)
“Those expressions are omitted which can not with propriety be read aloud in the family.”
—Thomas Bowdler (1754–1825)
“Whatever offices of life are performed by women of culture and refinement are thenceforth elevated; they cease to be mere servile toils, and become expressions of the ideas of superior beings.”
—Harriet Beecher Stowe (1811–1896)