Answer: Hi names Sergeant von im here to help!
1) x2 (squaring) is a function.
2) x3+1 is also a function.
3) Sine, Cosine and Tangent are functions used in trigonometry.
4) and there are lots more!
Step-by-step explanation:
A relation from a set X to a set Y is called a function if each element of X is related to exactly one element in Y. ... This is a function since each element from X is related to only one element in Y. Note that it is okay for two different elements in X to be related to the same element in Y. ;)
