zeeeh Bob

Everyone's bob is intimidating.

• Fundimental Principal of counting
• Factorial Notation
• Permutations
• Permutations of Non-Distingushable Objects
• Circular Permutaions
• Combination

There was a number of different formulas and terms we learned in this unit.

• n! = n · (n-1) · (n-2) ...etc
• r = generally means the amount of objects to be arranged
• P = "pick"
• c = "choose"
• i = term? not sure about this one
  

This unit has been the easiest to understand so far. We learned a number of different things for such a short unit.

The ideas were simple but i have most difficulty on finding what formula to use for a problem. Like to choose the "pick" or "choose" formula.

Also, circular permutations and middle terms are difficult for me to understand.

OH I loved how Mr.K showed us how math applies to what we believe is beautiful. I wish we could have went more indepth with that. Math is EVERYWHERE.

Note to self:

• It is easier to just draw a diagram!
• Permutations are when order matters.
  
• Combinations are when order does NOT matter.
• Mr.K has Math Powers.
• when solving certain problems with permutations with 0, o's are special!
  
• (n "over" r) is NOT (n/r)
• im tired.
  
• Don't take on too many things at the same time :|
  

Scribemay11

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Reflection

Big Ups to Anthony!

He's been a trooper helping me out :D also my late night study budy. HAHA seriously guys, ADD ME :)

So far so good. Not an overly difficult topic but because I haven't been practising.. I haven't gotten it down pat yet!

It's pretty much embedded in my head that:

• A logarithm is an exponent!

Short and sweeet. Just like me :)
(Note to self: never say that agian)

Time to study!

---------

Okay, maybe it was TOO SHORT.

Since I haven't been attending class lately, I've been relying on the slides and on your scribe posts!

I say, GOOD JOB! It's been helping me ALOT :)

Helpful hints:

• don't forget a logarithm is an exponent (this was a little difficult to understand in the begning)
• factor (it's so much easier to solve logarithms after factoring .. PROPERLY)
• log and ln exist on a calculator for a reason :D (i just learned that @1am)

There are a few things thought that I've been having trouble with since some of the slides do not explain EVERYTHING.

Such as: (being that {x} = subscript)

• a^x = b turns into log{a}b = log{c}b / log {c}a
• log{5}( 3x + 1 ) + log{5}(x-1) = 3 turns into 3x^2 - 2x - 1 where did the log{5} go?! and why!?
• reason for rejecting?
• antilogs
• ln is confusing
  

Note to self: Study earlier. (Yes, it has taken me this long to realise :) haha)

" You only fail when you've given up completely. "

The Lion's DEV Deadlines

Updated April 30 (Since now I know what I'm doing)

April 26

• Decide what to do.
• Have Sample Questions Read

May 3

• Freewebs Website Created including Title
  
• Complete all four questions and solve
• Start creating ideas for a layout and presentation of questions

May 8

• Deadline for ideas (presentation of questions and layout)
  
• Confirm and draft

May 10

• Final drafts deadline
  
• Start creating layout and presentation of questions

May 15

• Complete Pictures for questions
  

May 17

• Complete layout
• Picture Editing Deadline
  

May 22

• Advertising ideas/extras Deadline
  
• Start Creating extras
  

May 24

• Presentation of questions Deadline
  

May 29

• Work on outstanding assignments for project
• Complete all questions
  
• Extras Due
  

May 31

• First Deadline

June 7

• Absolute Deadline
  

Time is going way to fast! Finally this unit has come to an end but I wasn't looking foward to it. I learned that the most important thing (well still learning) that you must do your homework! The best way to understand math is by actually doing it. You cannot teach something that you don't practise.

I found that this was the easiest unit to understand but unforunately I still lack practise. Just like everything else, there are different ways to achieve a goal although some ways are better than others.

Time to study!

Less Is MORE

1.

- Sign up! (must have a yahoo account to sign up)
- Upload 5 photos.

Remember folks: You are all born on Pi day!

NOW THE GOOD STUFF.

Mr. K’s Example:

For a Saskatchewan town the latest sunrise is on Dec 21 at 9:15am. The earliest sunrise is on June 21 at 3:15am. Sunrise times on other dates can be predicted using a sinusoidal equation. Note: There is no daylight savings time in Saskatchewan.

a) Sketch the graph of the sinusoidal function described.
b) Write 2 equations for the function one using sine the other cosine.
c) Use one of the equations in (b) to predict the time of sunrise on April 6.
d) What is the average sunrise time through the year?
e) On what days will the sun rise at 7:00am?

In order for us to solve this equation, we need to visualize it. So let’s make a graph! And pictures are always prettier =]

a) Sketch the graph of the sinusoidal function described.

March10 01

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(to view properly, please enlarge! ohh and please ignor my spelling......... and grammar.......)

b) Write 2 equations for the function one using sine the other cosine.

[click to enlarge!]

Sine			Cosine
A=		-3	A=	+3
B=		2pi/364	B=	2pi/364
C=		+81	C=	-10
D=		6.25	D=	6.25

Using f(x) = A sin B ( x - C ) + D we end up with:

• f(x) = -3 sin [ 2pi / 364 ( x - 81 ) ] + 6.25

and g(x) = A cos B ( x - C ) + D we get:

• g(x) = 3 cos [ 2 pi / 364 ( x + 10 ) ] + 6.25

(I'm not sure how to explain this part. I'm hoping this is pretty much straight foward for everybody...... If not, just comment and I'll atempt to explain it.)

c) Use one of the equations in (b) to predict the time of sunrise on April 6.

To find the the time of sunrise of April 6, we need to find what day that is.

(Month vs # of days)
January 31, February 28, March 31, April 6
31 + 28 + 31 + 6 = 96
Now replace the x with 96.

• f(96) = -3 sin [ 2pi / 364 ( 96 - 81 ) ] + 6.25

or

• g(96) = 3 cos [ 2 pi / 364 ( 96 + 10 ) ] + 6.25

Check out these GREAT AWSOME SITES:



(curse blog spot for bad quality uploads!)