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## Main Question or Discussion Point

Hi guys,

I'm trying to sort out the following formula, but just can't find out how to solve for 'x'.

Could you guys please help me out??

http://imageshack.us/a/img198/4850/screenshot20120917at725.png [Broken]

Uploaded with ImageShack.us

And I have another one, is there a quick way to solve this one using the log function of a simpele Casio Fx82ms calculator?

http://imageshack.us/a/img842/7760/screenshot20120917at731.png [Broken]

Uploaded with ImageShack.us

The 'x' here is the interest rate and the 'e' mentioned here is the mathematical constant (or 2.71828).

I would really appreciate your help!

I'm trying to sort out the following formula, but just can't find out how to solve for 'x'.

Could you guys please help me out??

http://imageshack.us/a/img198/4850/screenshot20120917at725.png [Broken]

Uploaded with ImageShack.us

And I have another one, is there a quick way to solve this one using the log function of a simpele Casio Fx82ms calculator?

http://imageshack.us/a/img842/7760/screenshot20120917at731.png [Broken]

Uploaded with ImageShack.us

The 'x' here is the interest rate and the 'e' mentioned here is the mathematical constant (or 2.71828).

I would really appreciate your help!

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