Introduction to Sequences

You've done sequences in probably around 5th grade.

A sequence is a function too, but, a function that operates not on just any value, but on a "term" that starts counting upwards from 1 along the natural numbers, so, it can't take just ANY input.

Such sequence a, with the term n, is denoted and read as "a sub n".

Next, this sequence has a rule. For a function this would be the part after f(x)=

For example:As n counts up,The sequence assumes the following values: Sequences are also functions, of course. They take an input set and give an output set.

We have now laid the bases for our next topic:
Monotonicity