Hi guys,(adsbygoogle = window.adsbygoogle || []).push({});

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]

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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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# 10-year zero coupon rate, how to calculate x?

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