Posted 03 April 2013 - 02:25 PM
which I'd like to expand to obtain a polynomial in x. But try as I might, all I can see (in the Main screen) is a symbolic representation of the sum or products, I can't get the ClassPad to expand it all out. How can I do this? ("expand" doesn't seem to have any effect here).
Posted 03 April 2013 - 06:57 PM
Posted 03 April 2013 - 09:31 PM
There is a Σ in math keys, test it.I dont know if work like sum( .
Edited by helder7, 03 April 2013 - 09:32 PM.
Posted 03 April 2013 - 11:11 PM
seq(∏(x-i,i,1,n)/n!,n,1,5) => s
Then add the sequence:
I don't know why Σ doesn't work directly.
Posted 17 May 2013 - 07:11 PM
Anyway yes this is a very silly limitation, at least there should be a way to force it to expand the inner product, but I couldn't find any.
Define sum2(e,x,a,b)=sum(seq(e,x,a,b)) and using this sum2 function instead of the original Σ function may help in this situation.
Also tagged with one or more of these keywords: classpad 330, sum, product, symbolic
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