scorpion007 (November 30, 1999 at 12:00 am)

Isn't it 100r %, not 10r %?

samlocal88 (November 30, 1999 at 12:00 am)

Hey Sal, does it work the same way when you're earning interest say on a savings acount? Or do they only compound your interst once a year? And how would that formula look like (to calculate your savings in time) Thanks!

realart1114 (November 30, 1999 at 12:00 am)

This is so wonderful! I went through all of your compound interest videos and some of the logarithm videos you have - I learned from your videos what I couldn't learn from my online schooling. Their "lectures" (which are nothing more than written lectures) didn't teach much. Thank you for posting these!!!

Surhotchaperchlorome (November 30, 1999 at 12:00 am)

A = Pe^(rt) if memory serves.

purplefreak007 (November 30, 1999 at 12:00 am)

31 years ago my mother gave my uncle $4000 for safekeeping. With compounded interest, what would that amount total today? Thanks!

lyndonsilva (November 30, 1999 at 12:00 am)

Nice work. keep it up. mean time come for social media marketing for esteembpo**com

uburex97 (November 30, 1999 at 12:00 am)

Have been teaching finance for ages but have no math background. Although I could glibly state that FV = Per^t I could never explain why in detail - UNTIL NOW - thanks! Still worth pointing out that although quants use exp function all the time, it never occurs in the real world. Interest is always quoted periodically.

9iam (November 30, 1999 at 12:00 am)

you "divide" the year into n parts and at the end of each part compound interest is calculated

jomama1986 (November 30, 1999 at 12:00 am)

e to the x is the natural number because it is the only number in which its derivative is the same value as its initial function. Thats why the natural log is called, the natural log function.

andyct1982 (November 30, 1999 at 12:00 am)

P(e)^rt something like that