May 29, 2008

We started with the homework check on Questions #16 & #18 from the “Sinusoidal Data Exam Questions” Booklet, and continued with the correction of these. Then Mr. Max showed us how to do a Blog Clean up, and told us to do it before June 20th. New homework is #1 & #2.

Here my little hint for sinusoidal functions:
a = amplitude

(the distance between the average and the maximum or minimum)
b = 2π/period

(the time it takes to get from max1 to max2)
c = phase shift

(the difference from the point of start (time 0) to the point where a not phase shifted sinusoidal function would start)
d = average

(the middle between maximum and minimum)

-c/b => phase shift

We started with Mental Math, learned about the normal distribution and how to create a histogram => y=normalpdf(x) on the calculator. Then he assigned us to draw a standard histogram.

#1) p(between 2% and 6%) = 87.16% (=> normalcdf)

After doing Mental Math we continued with Personal Finance, with helping Kara calculating her Net Worth.

february 22

Start: Personal Finances

We've worked with the TVM Solver of the TI83+/84+. We've discussed the vocabulary, that is needed to work with the TVM Solver and with Microsoft EXCEL.