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It's all about sequence, ma'am.
Good morning, dear students! How was your weekend? Did you have a nice time?
That's excellent! Now, Can somebody recall what was our last topic?
Good morning, Teacher Ai! My weekend was fantastic ma'am.
Since, we have already discussed about sequence. Lets move on to the different types of sequence. Now, class what phrase has revealed on the whiteboard?
ARITHMETIC SEQUENCE
Arithmetic Sequence, Ma'am.
Arithmetic sequence is a sequence where every term after the first is obtained by adding a constant called the common difference.Common difference is the difference between two consecutive terms of an arithmetic progression
Now, you have an idea about arithmetic sequence. Let's proceed to the example.
that's it!
5, 8, 11, 148 - 5 = 311 - 8 = 314 - 11 = 3Therefore, 3 is the common difference.
Let me show you an illustrative example on how to apply the formula of the arithmetic sequence on finding the nth term.
Formula of the Arithmetic Sequencean = a1 + (n - 1) dFind the 8th term of the sequence 6, 8, 10, 12.Solution: a1= 6, n = 8, d = 2, an = ? a8 = 6 + (8 - 1) 2 a8 = 6 + (7) 2 a8 = 20
It appears to be so simple, ma'am.
It seems like you already understand on how to solve arithmetic sequence. So, I will give you an assignment to work on and submit it to me tomorrow.
Let's call it a day. Goodbye, class!
Goodbye, Ma'am Ai.
Assignment Find the 5th, 6th, 7th term of the sequence 7, 10, 13, 16,

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