- Dynamics homework returned
- #2: don't do a "simple interest" calculation....
- #13: check your work!
- A Dynamical Story from the 7-year-old world....
- Their house:
. Translation: if you want a movie, fight!
- Our house:
. Translation: if you want a movie, don't fight!
- Their house:
- Homework, section 6.3, due today.
- Upcoming "show-n-tell": Next week -- 4/29. Are you still putting
it off? What are you thinking?
- You can start doing the "final homework" -- the attitude survey -- on-line, on Blackboard.
- It's time for course evaluations: those are to be done on-line. Please visit the site http://eval.nku.edu/ to do so.
You can carry this out until Friday of next week (May 1). Please participate!
- 'Father of Fractals' takes on the stock market:
The fractal stock market segues right into our unit on financial math....
- Homework: pp. 678-681, #1, 3, 4, 9, 10, 12; Type up #20. Due
Wednesday, 4/29
- How
do the credit card companies make so much money?
- (Answer: the dynamics of compounding interest).
- Good news: the dynamics of compounding interest are the
same as the dynamics of population growth that we saw before!
- Simple rule, applied over and over
- One twist: how often does the bank compound?
- Interest and loan amounts grow exponentially, which one can show with a graph. The surprise is that they may start slowly, but then they take off!
- Pretty straight forward: #6, p. 678
- Here's a twist: #11, p. 679
- Let's do #13, p. 679
- How do
mortgages work?
- Other loans can be calculated the same way: for example, CitiFinancial's loan shark fishing attempt on me.
- Here's another straight-forward mortgage problem: #16, p. 680
- A "real-world" example: do you use those balance-transfer
checks? I got
this offer awhile back.
- 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%).