Question: What is wrong wiht maple computing values

In a new worksheet

gcd(a,b);
                               1

 

Why is maple computing this? It does it for a lot of functions and I never know if it is giving the correct results. a and be are not defined. I'd expect it to just return gcd(a,b).

 

I put it in formulas but I never know if it is simplifying before computing. I have no idea why. Maple never did this stuff until I upgraded.

 

 

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