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**David****Member**- From: Bumpkinland
- Registered: 2014-04-23
- Posts: 3,137

Hello, I need help with this formula

So can someone explain this formula and show me examples?

**Sorry that I edited this alot, it's my first time using latex.

*Last edited by David (2014-05-29 02:52:01)*

Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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**bob bundy****Administrator**- Registered: 2010-06-20
- Posts: 8,354

hi chooipian

One example would be for calculating compound interest. Say you invested xo at a rate of r% per year. After one year you'd have xo (1 + r). After two years you'd have xo(1+r)(1+r) etc.

Plus anything that increases in a similar way.

Bob

ps. Latex looks great .

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

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**David****Member**- From: Bumpkinland
- Registered: 2014-04-23
- Posts: 3,137

How about decay?

Meaningless, meaningless, Everything is meaningless! - Ecclesiastes 1:2

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**bob bundy****Administrator**- Registered: 2010-06-20
- Posts: 8,354

Yes. Make r negative.

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

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