I have some function f(x,y,z) and I want to use some commands like f.coefficient({y:1}) on it, but it's no more possible if it's a function. I would be greatfull for help
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I have some function f(x,y,z) and I want to use some commands like f.coefficient({y:1}) on it, but it's no more possible if it's a function. I would be greatfull for help
 
                
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