The description of this problem is not very clear. It's really asking for the first and last row for each unique value in the first column.
"However there will be more than one row index and that makes this question challenging." - that really explains nothing to me
Remove the polynomials that have positive real elements of their roots.
Create a square matrix of multiples
Check if equal
Dealing with correlation results!
Repeat string n times - 3
Net Present Value of a Stream of Cash Flows
Fill the matrix - 1
Fill the Matrix - 2
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