- Where's the old homework? I seem to be missing a bunch of proposals....
- Remember: the focus is on the math!
- New Homework:
Wed 2/24 Money Math - Read the section on Fractals, p. 100.
- Using the logarithmic spiral for fun (but no profit;): make your own spiral, using my web interface and your own image, and I'll post them on our "website gallery". Try to find some extra mathematical facet of interest (e.g.
) -- results so far!
- Upcoming talks and events:
- Let me get another count of those going to the KYMAA meetings, March 26/27.
- The Math/Stats Club "Movie Night" is this Thursday, February 25. There is a sign-up sheet on Brooke Buckley's door.
- Consider attending this Friday's seminar: In this week's Friday Seminar Brooke Buckley and Beth Noblitt will discuss "Preservice Teachers' Understanding of Level of Confidence." It is at 3:00 in ST 111.
- Notice:
The PRIME application deadline has been extended. Applications will be accepted until all summer interns postions are filled or until May 1, 2010. The applications and brochure are available online: http://prime.nku.edu/ Please encourage any qualified current freshmen or incoming freshmen to apply. I am also available to answer any questions you or your advisees might have. Thanks, Gina
- Tell me what you learned.
- What do you wish you'd have asked?
- How
do the credit card companies make so much money?
- How do
mortgages work?
- Other loans can be calculated the same way: for example, CitiFinancial's loan shark fishing attempt on me.
- You encounter a few laws such as The rule of 72 (70, 71,
69.3,...) to calculate doubling time: forget them! Just do the
math: we want to find out how long until
That is, until
where n is the number of compoundings per year, and r is given as a decimal (e.g. 9% is represented by .09).
When compounding is continuous (i.e.
), this reduces to the very lovely rule
- A "real-world" example: do you use those balance-transfer
checks? I got
this offer last year.
- What are the hidden costs (buried in the fine print)?
- What would $1000 cost me for a year, if I take it out May 1, and pay nothing back? (By the way, the balance transfer APR is 18.99%).