AlgebraAlgebra Explained |
What are some other terms used in dealing with algebraic equations? |
There are many terms in algebra, including those dealing with equations. The following lists some of the more common ones:
Equality and inequality—An equality is a mathematical statement that shows the equivalence of two quantities. For example, if a is equal to b, it is written as the equality a = b. An inequality is just the opposite: a does not equal b, or a ≠ b.
Formula—A formula is a rule, fact, or principle expressed in terms of mathematical symbols, including equations, equalities, identities, or inequalities. (Note: the plural of formula in Latin is “formulae,” but it is more readily accepted today as “formulas.”)
Identity—An identity is a mathematical relationship equating one quantity to another that initially may appear to differ; it also means an equation that is always true, such as the Pythagorean theorem (for more about identities, see below).