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Question: Maple cannot determine if expression is true or false

Question:Maple cannot determine if expression is true or false

zjervoj97 40 Maple 2015
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August 25 2018
1

Hi,

I'm new into Maple and I need some serious help. I'm supposed to read numbers from file (teploty.txt) and according to value assign some text to them and write it in other file (barvy.txt). I think I've done it right (propably not, I learn it for like half a year), but Maple keeps writing "Error, cannot determine if this expression is true or false: value < 20".

Can anybody help me, please?

Thank a lot!
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