Cumulative Sum
Hi,
I think a new command should be added to Geogebra called CumulativeSum. I think this command would better serve calculus students who want to plot a sequence of partial sums of an infinite series. I suggest the command should have this option:
CumulativeSum

That is, if the list contains:
list={a1,a2,a3,a4,a5,...,an}
Then CumulativeSum
 would produce:
{a1, a1+a2, a1+a2+a3, ... , a1+a2+a3+...+an}
Then the students could do the following: Create a slider for an integer n, then:
L1=Sequence[n]
L2=Sequence[1/k^2,k,1,n]
L3=CumulativeSum[L2]
Zip[(A,B),A,L1,B,L3]
And they would have a plot of the sequence of partial sums with ease, which they could then use to examine the convergence, divergence of infinite series.
Now, I know there are ways that this can already be done. For example.
L1=Sequence[n]
L2=Sequence[1/k^2,k,1,n]
L3=Sequence[Sum[L2,m],m,1,n]
Zip[(A,B),A,L1,B,L3]
But that is much harder for students who are just being introduced to Geogebra to understand, especially when the series go from say n=5 to infinity.
Not sure if I am making the suggestion in the right place.
D.
 would produce:
You can create your own tool.
The attached tool only uses the command
Sequence[Sum[<list>,k],k,1,Length[<list>]]
Simon
https://ggbm.at/1391091
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