tlhIngan-Hol Archive: Wed Oct 11 20:04:25 2000

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RE: math questions / sums



> >a simple example:
> >
> >  5
> > SUM i
> > i=1
> >
> >I'm not exactly sure how it is read in _English_, but likely
> >close to "the sum of i, for i from one to five"
> >
> >meaning (i=1) + (i=2) + (i=3) + (i=4) + (i=5) i.e. 1+2+3+4+5
> >
> >a more formal example:
> >
> > i_max
> >  SUM   n_i = n_(i_min) + n_(i_min+1) + ... + n_(i_max-1) + n_(i_max)
> >i=i_min
> >
> >where it is assumed that you have some way of knowing "what n_i is"
> >in some (not necessarily very specific) sense for all the indices
> >i_min <= i <= i_max that occur in the formula
> >
> >
>
> what I was atempting to show for an equation was
> the sum of (n+1) for 1 through 5 respectivly
>  (1+1)+(1+2)+(1+3)+(1+4)+(1+5)=20
>
> to five from 1 for the sums of (n+1)

I understood the original message, but now where did this +1 come from?
It was the sum of n when n is 1 thru 5,
but now you're saying the sum of (n+1) when n is 1 thru 5.  That's
different.


DloraH



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