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Question: Error, (in minimize) unexpected options: {x}

Question:Error, (in minimize) unexpected options: {x}

Missis 15 Maple
extrema minimize
October 05 2023
1

Привет. У меня проблема с пестремой, помогите пожалуйста:

restart;
y:=sqrt((x^2*(x^2-4))/(x^2-1));
readlib(extrema): readlib(maximize): readlib(minimize):
extrema(y,{},x,'s');s;
ymax:=maximize(y,{x});
Error, (in maximization) unexpected parameters: {x}
ymin:=minimize(y,{x});
Error, (in minimization) unexpected parameters: {x}
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