Question: choose only positive root, put many in a list, then choose smallest value

Hi,

This is for a code that analyzes composite laminates with many plys of varying orientation stacked on top of each other, and this is the first semester I've used Maple.

I'm solving for the roots of an equation which will always have a positive and a negative root, and I do this for each ply (could be 100 plies in a laminate).  I want to collect the positive root for each ply, put them in a list or array, and then pick out the smallest value of all the plies (which corresponds to the ply that will fail first).

 

Thank you for any help

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