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Friday, December 16, 2005

Good Friday Scribe

As you all know, we do not have homework this weekend - OH YEAH!!!! :) Unless you didn't finish the exercise in class today that is ...
In today's class we had a substitute, Ms. Alexiuk. Our tests weren't ready yet so we didn't get them back, and will on Monday. She told us what we were going to do for the whole class, which was to go over any questions from exercise 49 (which there wasn't any of..) and then to work on exercise 50; functional notation.

I think everyone pretty much got the questions... I think number 5 was function of a function type of question, as me and Kim had discussed :P and the rest were pretty easy after you gave some thought into it. I'll go over some questions from the exercise if some of you didn't get it.

Question 5) f(x)=2x+1 g(x)=x2
a. f(g(2)) [at first glance this question could make you go, "wah!??! o_O" but really it's a function within a function type of question, so first thing you need to do is solve the inner function first.]
g(2) = 22
= 4 [now that you have the inner function, you just simply substitute it within the outer function, giving you f(4).]
f(4) = 2x+1
= 2(4)+1
= 9

Question 6) f(x) = 4x+3
b. f(k+1) = 4x+3
= 4(k+1)+3
= 4k + 4 + 3
= 4k + 7

Question 8) This noted that tha function is called a constant function, therefore all answers equal 3.
a. f(4) = 3 b. f(1) = 3 c.
f(k) = 3

Question 9) Let f(x) = 3x - 6. Find a number k so that f(k) = 60. [kay so basically this question is asking you to solve for letter x, but in this case letter k.]
3k - 6 = 60
3k = 66 (moved the 6 to other side of equal sign changing it to a positive, therefore making 60+6)
k = 22 (66 divided by 3)

And there you have it! See, I may have had an easy scribe post today and all I could've posted was three lines but ... I didn't. :) I announce once again that we DO NOT, yeah that's right - DO NOT have homework this weekend :) and that scribe for Monday is -- NATASHA >:) teehee.
BTW Mr. Kuropatwa; hope you knocked them off their chairs with your presentation thingy-ma-jiggy ^_^
Bye now :D Have a good weekend everyone!


At 12/17/2005 12:12 AM, Blogger Mr. Kuropatwa said...

Janet this is a FANTASTIC Scribe Post!!


The presentation went really well. They were quite impressed with your work on the blog and more so with the answers to the questions you guys had written on oletango.blogspot.com -- as always, you guys were the stars of the show. ;-)


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