Wednesday, Oct 31, 2007

Hey! Today, we didnt do Mental Math. Kind of dissapointed, its always so fun. He let us do some mental math, and while we do that, he is supposed to catch up on his marking. A couple people have troubles with some questions that came up on their Accelerated math. Simple as that, we get lead into a discussion..

e = 2.71828 2nd + LN - those are the buttons you need to press to get to e.

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  Here is an example that Mr max introduced:

During 1991,
140000 people visiting the Amusement Park
1995,
373 000 people visiting the Amusment Park

a) F(t)* t is x * = 14 0000 e 0.245t
b) F(t) = 140000 e 0.255t
c) F(t) = 233000 e 0.245t
d) F(t) = 233000 e 0.255t

That A-value is the y-intercept, so we know we have to get rid of C and D.

If you put in 140000 times E to the power of .245x, into the y= ..
Nothing will happen till you do something smart with your window settings.

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There was a type of questions that Chev brought up, here is what I caught from the discussion we had.

Endangered Species type of Question:

There is a list of information on numbers you will get with the question.. with that info, you do the following:
Remember:

Press :Stat + Enter, then you see the Lists. Put the info in!.
You load, the year into L1, population into L2, and Log P into L3.

There will be two parts of it that it'll tell you to do, a) and b).

a) Find the linear equation of the year&LogP
If you press, Stat + Calc + LinReg (ax+b) *number 4* + 2nd + L1*number 1* + comma + L3 .... enter.
b) Exponential equation of year&LogP
If you press, Stat + Calc + ExpReg* number 0* + 2nd + L1 + comma + L3... enter.
a.. LinReg L1,L3 (just to help you).
b.. ExpReg L1,L2

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Just a couple reminders:

• 25 Accelerated Math Objectives due tomorrow!
• Math test on Tuesday
• Moga Madness today!
• Happy Halloween!