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Re: Ed Monton post# 439

Sunday, 02/16/2003 3:42:34 PM

Sunday, February 16, 2003 3:42:34 PM

Post# of 2577
I see that you are an engineer, so your math skills probably far exceed mine. There are many uses to the rule of seven and the most used is that when compounded at 10% a dollar will double in seven years. I don't remember at the moment whether that is compounded in advance or not in advance which is a difference of the way Canadians and Americans use compounding. It is also used in marketing and sales to teach salesmen that a customer doesn't mean "no" until he says it seven times. Do a google search. I love prime numbers and when entering the market may try and open eleven positions and work them down to seven. Here is a link with the actual algebraic formula for the six functions of a dollar. There are actually seven, but no one uses the seventh much as it is just that 1=1. Thirty years ago when there were only mainframes calculating monthly balances of mortgages these formula were used depending on whether the compounding periods were monthly, semi-annually or annually and as suggested before in advance or not in advance. Probably even today, most mortgage managers just accept the calculations their companies provide without knowing the basic math that they are derived from. These formula are used to determine the future value or discounted value of streams of income such as was implemented in the first financial calculators provided by Hewlett Packard in the late seventies. Before that, if I was discounting an incentive in a lease for example, I would have to literally drag out the book with all the factors published. Same thing used to apply to chart pattern analysts whose firms had subscriptions to those giant books published monthly with charts of the S&P listed companies.

You will have to cut and paste this link, I can't get it to work otherwise.

http://www.reinet.com/library/computers/file14.htm

Here is the book I read about selling short, although I'm sure there are other good ones.

http://www.chapters.indigo.ca/item.asp?Catalog=Books&Section=Books&Cat=&Lang=en&Item...

and the book I recommend all read on investing.

http://www.chapters.indigo.ca/item.asp?Catalog=Books&Section=Books&Cat=&Lang=en&Item...


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