以下是引用lshrachel在2009-2-20 13:21:00的发言:2、有一题化简之后f(x)=1/x^2,x是所有的实数,其f(x)区间是是(0,1] 选项:(E) positive and less than and equale to 1 之间有个疑惑选项和容易没看清就算了,equal to and more than 0 to less than and equale to 1
2、有一题化简之后f(x)=1/x^2,x是所有的实数,其f(x)区间是是(0,1] 选项:(E) positive and less than and equale to 1 之间有个疑惑选项和容易没看清就算了,equal to and more than 0 to less than and equale to 1 2、有一题化简之后f(x)=1/x^2,x是所有的实数,其f(x)区间是是(0,1] 选项:(E) positive and less than and equale to 1 之间有个疑惑选项和容易没看清就算了,equal to and more than 0 to less than and equale to 1 2、有一题化简之后f(x)=1/x^2,x是所有的实数,其f(x)区间是是(0,1] 选项:(E) positive and less than and equale to 1 之间有个疑惑选项和容易没看清就算了,equal to and more than 0 to less than and equale to 1 请问下LZ,这个“f(x)区间是是(0,1]”是题设,还是需要我们自己算的答案?如果是答案,我算的这个值域怎么是“除了0以外的全体实数”呢? 谢谢妹妹提醒的好,这题我估计做错了,我把条件更新了。 祝你考好
[此贴子已经被作者于2009-2-20 17:15:14编辑过] |