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I have watched the "visual of multiplication" (https://www.youtube.com/wat...) and tried to change it a bit to show the squaring of integers but I got lost trying to make the row slider dependent on the column slider.. thanks for any suggestions.
The same question 
Hi,
If you want just to make the row slider dependent on the column slider :
in script OnUpDate of row slider :
SetValue[column,row]
in script OnUpDate of column slider :
SetValue[row,column]
without script :
use only one slider n, and use command :
Sequence[Sequence[Polygon[(i - 1, j), (i, j), 4], i, 1, n], j, 0, n - 1]
...
thanks sir, i'll give it a try and let you know
it worked perfectly, thanks. any idea of how to code a 3rd slider to show Sum of n terms? (1^2+2^2+3^2...+n^2)
Go to View ... Algebra or press Ctrl+Shift+A.
In the Input Bar, type "sumofsquares=sum[sequence[Columns]^2]"
In the Algebra Window under "Numbers", you'll see sumofsquares. Drag sumofsquares into the main window, Graphics View 1.
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