答案應該是一個數集,它滿足條件:
x=sqrt(40[x]-51)/2
或者,
x=-sqrt(40[x]-51)/2
這裏,
[x]>=2;
答案應該是一個數集,它滿足條件:
x=sqrt(40[x]-51)/2
或者,
x=-sqrt(40[x]-51)/2
這裏,
[x]>=2;
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