00:01
Hello, today we're going to discuss sequences.
00:04
A sequence can be a saw more product of a certain function with different inputs.
00:10
Today we're going to talk about arithmetic sequences, which means that we're going to add the given inputs.
00:16
So we're going to start by discussing sigma notation.
00:21
In general, sigma notation can be written as such.
00:29
So as you see, we can have a, the sigma, which stands for summation or adding.
00:39
Then on the bottom of the segment we see this k, which is the index by which we are counting by.
00:47
And then we see the term that we are starting with.
00:50
This is often zero or one.
00:52
In this case, we are starting with one.
00:55
Next, we will have the term that we're ending with.
00:58
In this case, it is five.
01:00
And lastly, we will have the formula for that end term being, 5.
01:09
So let's start with an example of sigma notation...