Formula
Related Category: Mathematics
in mathematics and physics,
equation expressing a definite fixed relationship between certain quantities. The quantities are usually expressed by letters, and their relationship is indicated by algebraic symbols. For example,
A=&pgr;
r2 is the formula for the area
A of a circle of radius
r, and
s=
1/2at2 is the formula for the distance
s traveled by a body experiencing an acceleration
a during a time interval
t.