What is a function in math?

Answer 1

a function in math is most commonly used in graphing and the definition of a function is any equation that when graphed will not have 2 points on the same vertical line. the test for these is known as the vertical line test. functions include parabolas (y=x2, sine curves (y+sin(x)), lines (y=x), and polynomials (x3-4x2+9x) some things that are not functions would be circles (y=y2-x2) or side ways parabolas (x=y2).

Ans. A function is a relation in which each element of the 1st set,it corresponds to one and only one element in the 2nd set.

Answer 2

A function is a rule that connects two sets, let's say Aand B. The rule is that for every element in A there is exactly one correspondant in B.

Ex:

A = {a, b, c, d}

B = {1, 2, 3}

f:A->B (meaning the function f links the values in A to the values in B)

f(a) = 1

f(b) = 3

f(c) = 3

f(d) = 2

Answer 3

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