Sinusoidal Functions Review

There are a number of ways to approach the sinusoidal/periodic function. We were taught to use either GRAPHMATICA or a graphing calculator.


The periodic function equation is y=Asin(Bx+C)+D and that is what you will input into the software of your choice.

A=Amplitude
B=Period (formula for period P=2(pi)/B)
C=Phase shift
D=Verticle shift

Here is a site that demonstrates those values (very usefefull to play around with it)
-http://www.ronblond.com/M12/sc.APPLET/index.html

If you are given the sinusoidal function(periodic function) and want to graph it using a calculator
1. press[mode] and make sure that it is on radian NOT degrees
2. press [y=] and input the formula Asin(Bx+C)+D (substitue numbers)
3. press [graph] and behold the squiggly lines
-you may want to adjust the windows setting to get a better picture

If the information is given in tabular data then you will have to use something called SinReg
1. press [stat] and put the data into a list
2. press [stat]-> calc then go down to something called SinReg
3. back at the home screen put in SinReg,L1,L2,Y1
4. turn on the stat plot ([2nd y=]) and press graph


And that my friends is periodic functions in a nut shell.

May 14th 2009

Today in class the first thing we did was a homework check for pathways. We also corrected the 4 questions. Then we went over some of the questions on exercise 2:counting principles and got the rest of the questions assigned. If you do question 5 you get some kind of bonus.

Feb 17/09

Today in class we did a mental math and then talked about the recordings and who should upload them or if they are even worth uploading.

We also went over exercise 8 question 4.

Today we did a mental math at the beginning of class. We learned how to multiply matricies using the two finger method. The inner dimensions must match to multiply (the number of rows in the second matrix must match the number of columns in the first matrix), is what Mr. Maksymchuk told us. He also made a video and pictures to show us how to multiply matricies.