.'f(x)定义域[-2,2]
.'.-2<=x^2-1<=2
-根3<=x<=根3
.'.f(x^2-1)定义域[-根3,根3]
已知函数f(x)的定义域为[-2,2],则f(x的平方-1)的定义域为
已知函数f(x)的定义域为[-2,2],则f(x的平方-1)的定义域为
数学人气:122 ℃时间:2020-03-28 21:10:36
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