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Wednesday, January 11, 2006

Blogging and Me

I'm today's scribe. Just because I didn't let her borrow my AAA battery for her mp3 player :\

Today's class was very interesting. Right off the bat we got our math exam assignment that read "Go For Gold" on the front. It also read "You must get 100% on this exam" which scared me. Who wouldn't be scared if you couldn't even get 99.99% on it. Besides getting the assignment everything went smoothly.

We wrote into out dictionary about sequences and series. Basically a sequence is an ordered list of numbers that follow a certain pattern or rule. For example: when giving the sequence 7,11,15... you will notice that the numbers are being increased by the same value which for this is 4. Each number has its own rank, 7 being term 1. There was a big long discussion or argument if you can use term 0 as the first term. We could find term 0 but would it be the same. I don't want to get deeper into this as I could ask the same questions infinitely. If you wanted to find the 50th term of this sequence and your too lazy like me to start writing all the terms, you can use the rule and write it as an equation to make your life easier. The equation here is 4(50-1)+7 or 4(49)+7. 4 being the common difference of the sequence. 49 being how many times you need to add 4 and 7 being the first term which you have to add after multiplying. By doing the math the 50th term is 203.

A series is the SUM of numbers in a sequence to a particular term in the sequence. The series for 7,11,15... Would be 7,7+11,7+11+15... And you get 7,18,33... Now you have a new sequence and you can also get a new series. This goes on infinitely if you haven't catched on yet.

We also learned a bit on how to tell if a sequence is Arithmetic or not. Simply by figuring out the common difference (d=tn - t(n-1)) will determine if its Arithmetic or not. If the common difference is the same throughout each number its Arithmetic. If the number is different each time you have something else known as umm... Ask John he'll know.

Scribe tomorrow is Master Jian Lee. Happy Birthday Janet. I remembered your birthday but of all things, I forgot to say it :(


At 1/11/2006 8:25 PM, Anonymous janet said...

thanks jojo (:

At 1/11/2006 9:03 PM, Blogger Mr. Kuropatwa said...

Jojo, this is a really well written scribe post! You've covered all the most important points and used examples that help to make clear what you're writting about. Well done!

There is a spelling mistake ... can you find it and fix it before anyone else notices? ;-)

At 1/11/2006 10:17 PM, Blogger John D. - #12 said...

I couldn't find any spelling errors.. except for you're being spelled as your and it's being spelled as its..

AHA! Found it! It's caught, not catched! w00t lol.. Hey Jojo, correct that one out.

At 1/12/2006 5:32 PM, Blogger tim-Math-y said...

also, we wrote in "our" dictionary, not "out" dictionary near the beginning. :D


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