### Tuesday 14 of Frebuary 2012

Today we started the lesson with a fotocopy to review the Arithmetic Sequences, then we have done the exercises of the fotocopy and for the book: 8, 9, 45, 46, 47 and 48. They were very similars and repetitives.Also we have laern what is an Arithmetic Progresion.

What is a Arithmetic Progresion?

-In the fotocopy:

Arithmetic Progresion is a sequence of numbers such that the difference of any two successive terms of the squence is a constant(i.e., always the same number).That constant is called difference (d). Had one term of an Arithmetic Progresion been given, you would have just to add that difference to move to the next term.

An Arithmetic Progresion is a squence such that:-In the wikipedia:

An

**arithmetic progression**(AP) or

**arithmetic sequence**is a sequence of numbers such that the difference between the consecutive terms is constant. For instance, the sequence 3, 5, 7, 9, 11, 13, … is an arithmetic progression with common difference 2.

If the initial term of an arithmetic progression is *a*_{1} and the common difference of successive members is *d*, then the *n*th term of the sequence is given by:

- There are some videos taht explain it:
- http://www.youtube.com/watch?v=vlPHnGbKi9w

http://www.youtube.com/watch?v=d4jnVxLAkjo&noredirect=1

Listen to this song I love it!

http://www.youtube.com/watch?v=jCya1yiFFP4&feature=fvwrel

Listen to this song I love it!

http://www.youtube.com/watch?v=jCya1yiFFP4&feature=fvwrel

I hope you enjoy bye:)

Meritxell Ansotegui 3ºB.

Meritxell Ansotegui 3ºB.

What a wonderful entry you have created here, Meritxell!!! :D

ReplyDeleteWow wow wow!!^_^

I think I've read today that Adele is planning or retiring for 5 years "to live her life", as she has stated :P Furthermore, she's had recently a throat operation (ufff)

You may find interesting Antony and the Johnsons Music. Don't be scared of his outfit or appearance (we shouldn't judge a book by its cover). I've had the chance of attending to one of his performances and he really moves you :)

http://www.youtube.com/watch?v=loNU4fVpO8E