Answer
Mathematicians call such functions transcendental functions. Examples
include the logarithmic and trigonometric functions. These particular
examples can still be computed but not by algebraic means. For example,
the trigonometric functions can be calculated by actually drawing the triangle
involved, measuring its sides, and only then turning to the algebraic
operation of dividing.
Work Step by Step
Above are some functions that cannot be described in terms of an algebraic formula.