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-   -   please solve this simple equation, thx (http://mymathforum.com/elementary-math/28254-please-solve-simple-equation-thx.html)

oravikiran June 13th, 2012 04:33 AM

please solve this simple equation, thx
 
The equation is

1000 = 272/ (1+i)^0.25 + 272/(1+i)^0.5 + 544/(1+ i)^1

find the value of i.

The result is i = 0,13185

why wondering how the result came. can you please let me know the each step taken for calcuation.

Thanks , kiran

MarkFL June 13th, 2012 09:04 AM

Re: please solve this simple equation, thx
 
We are given:



Multiply through by and rearrange to obtain:



Let :



Use a numerical method to determine one of the real roots is:







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