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Question: on the syntax of eval(diff(u(x,t),x=0).....

Question:on the syntax of eval(diff(u(x,t),x=0).....

nm 8552 Maple 2018
syntax 2dmath diff
November 24 2018
0

Why  

eval(diff(u(x,t),x),x=0)=A(t)

gives

But

eval(diff(u(x,t),x),x=L)=A(t)

gives

I was expecting the same syntax in both cases. It seems for numbers Maple uses the first syntax and for symbols it uses the second syntax.

Does one need to worry about this difference?

 
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