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Question: How to not further convert to list when only contain one variable

Question:How to not further convert to list when only contain one variable

ComputerUser 535 Maple
polynomial
February 24 2013
0

the goal is write a for loop to iterate and get the power of a variable with degree function

i use nops and convert(F, list) can access each terms and variables

however y^2 can be convert to list [y,2] 

hope to add if condition to stop convert this.

how to do better?

i just guess to convert it first and then check if there is one of them is IsDigit in StringTools

however IsDigit(2) got error

is there a function to check number of variable in it?
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