问题
填空题
“∀x∈R,x2-2x+1>0”的否定是______.
答案
∵原命题“∀x∈R,x2-2x+1>0”
∴命题“∀x∈R,x2-2x+1>0”的否定是:
∃x∈R,x2-2x+1≤0
故答案为:∃x∈R,x2-2x+1≤0.
“∀x∈R,x2-2x+1>0”的否定是______.
∵原命题“∀x∈R,x2-2x+1>0”
∴命题“∀x∈R,x2-2x+1>0”的否定是:
∃x∈R,x2-2x+1≤0
故答案为:∃x∈R,x2-2x+1≤0.