若函数Y=X^2的值域为0<=y<=4,则其定义域为-2<=x<=2.
这句话对不对.
错,
定义域为-2<=x<=2.,值域是0<=y<=4,
这样说是对的
Y=X^2的值域为0<=y<=4,则其定义域为-2<=x<=2.是不对的
Y=X^2的值域为0<=y<=4其定义域有三种可能-2<=x<=2 -2<=x<=0或0<=x<=2