Leo Sutic wrote:
>
>>From: Berin Loritsch [mailto:[EMAIL PROTECTED]]
>>Stefano Mazzocchi wrote:
>>
>>I
>>don't know
>>what the letter above the sigma or below the sigma is supposed to signify.
>>
>
> The sigma is like a summing for-loop. Example:
>
>
>>> n
>>> --
>>> Invalid(r) = \ (V(r,I ) + Pc(r,I ) + s(r,I ))
>>> / i i i
>>> --
>>> i = 1
>>>
>>>
>
> would be like (with an asuumption of data types):
>
> float Invalid (float r) {
> float sum = 0.0;
> for (int i = 1; i <= n; i++) {
> sum += (V(r,I[i]) + Pc(r,I[i]) + s(r,I[i]))
> }
> return sum;
> }
>
> So, you can read the sigma as "sum of <expression after sigma> for all
> integer values of <whatever variable is below the sigma> between <the
> variable below the sigma's initial value> and <the value or variable on top
> of the sigma>". For the above: "sum of (V(r,Ii) + Pc(r,Ii) + s(r,Ii)) for
> all integer values of i between 1 and n".
Thanks Leo! That helps _alot_.
So, how do we decide what "n" and "m" are?
--
"They that give up essential liberty to obtain a little temporary safety
deserve neither liberty nor safety."
- Benjamin Franklin
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