1/4<(x^2+y^2)<1 입력

1/4<(x^2+y^2)<1 입력

 

 

 

 

ltlt("1:varivale", "2:number", "3:number") - Boolean comparison. Check if : "2:number" < "1:variable" < "3:number".

 

ltlt((x^2+y^2),1/4,1)

 

 

 

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lelt

ltlt