命题p:“x2≥1,则x≥1”的否定¬p是______.
命题P:实际是全称命题,即∀x2≥1,则x≥1,
∴¬P 是:∃x2≥1,使x<1.
故答案是∃x2≥1,x<1.
-Do you usually take a walk or do your homework after dinner?
. It's good for me.
A.Yes, I do
B.No, I don't
C.Take a walk
D.It doesn't matter
在电流互感器与短路端子之间导线上,只有进行拆、接线的工作,才要填用二次工作安全措施票。