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Question: Verify command with two variables

Question:Verify command with two variables

LegendCero 55 Maple 2019
verify
December 09 2020
1

Hello. I want to use the command verify but with two variables. For example:

verify(x^2 + y^2, 0, {'greater_equal'});

but I get FAIL as an answer. I tried adding before the verify command assume(x, 'real'); assume(y, 'real');

but notihng changed.

 

Thanks for any help.
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