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Question: How to fold seq

Question:How to fold seq

Adam Ledger 360 Maple
seq foldl
March 29 2018
2

ok i think they are called "nested" sequences, i will normally do something like: 

seq(seq(seq(F(i,j,k),i=1..Ri),j=1..Rj),k=1..Rk)

but in this circumstance the number of variables and the ranges for each are specified by the user in combo boxes and text windows etc, so i need to use foldl. The below doesn't work, so i was looking for a hint on what i am doing wrong:

 

 

Thanks in advance
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