若f(x)=x3-f′(1)x2+x+5,则f′(1)=________.
高二数学填空题简单题
已知命题p: x1,x2R,(f(x2) f(x1))(x2x1)≥0,则p是
A. x1,x2R,(f(x2) f(x1))(x2x1)≤0
B. x1,x2R,(f(x2) f(x1))(x2x1)≤0
C. x1,x2R,(f(x2) f(x1))(x2x1)<0
D. x1,x2R,(f(x2) f(x1))(x2x1)<0
高二数学单选题简单题查看答案及解析
已知命题p:x1,x2R,(f(x2)f(x1))(x2x1)≥0,则p是( )
A.x1,x2R,(f(x2)f(x1))(x2x1)≤0
B.x1,x2R,(f(x2)f(x1))(x2x1)≤0
C.x1,x2R,(f(x2)f(x1))(x2x1)<0
D.x1,x2R,(f(x2)f(x1))(x2x1)<0
高二数学选择题中等难度题查看答案及解析
已知命题p:x1,x2R,(f(x2)f(x1))(x2x1)≥0,则p是
A.x1,x2R,(f(x2)f(x1))(x2x1)≤0
B.x1,x2R,(f(x2)f(x1))(x2x1)≤0
C.x1,x2R,(f(x2)f(x1))(x2x1)<0
D.x1,x2R,(f(x2)f(x1))(x2x1)<0
高二数学选择题简单题查看答案及解析
已知命题p:∀x1,x2∈R,[f(x2)-f(x1)](x2-x1)≥0,则¬p是( )
A.∃x1,x2∈R,[f(x2)-f(x1)](x2-x1)≤0
B.∀x1,x2∈R,[f(x2)-f(x1)](x2-x1)≤0
C.∃x1,x2∈R,[f(x2)-f(x1)](x2-x1)<0
D.∀x1,x2∈R,[f(x2)-f(x1)](x2-x1)<0
高二数学选择题简单题查看答案及解析
(2014秋•莲湖区校级期末)已知命题p:对任意x1,x2∈R,(f(x2)﹣f(x1))(x2﹣x1)≥0,则“非p”是( )
A.存在x1,x2∈R,使(f(x2)﹣f(x1))(x2﹣x1)<0
B.对任意x1,x2∈R,都有(f(x2)﹣f(x1))(x2﹣x1)≤0
C.存在x1,x2∈R,使(f(x2)﹣f(x1))(x2﹣x1)≤0
D.对任意x1,x2∈R,都有(f(x2)﹣f(x1))(x2﹣x1)<0
高二数学选择题中等难度题查看答案及解析
高二数学选择题中等难度题查看答案及解析
高二数学选择题中等难度题查看答案及解析
已知函数f(x)=cosx﹣x2,对于上的任意x1,x2,有如下条件:①x1>x2;②|x1|>|x2|;③|x1|>x2.其中能使f(x1)<f(x2)恒成立的条件序号是( )
A. ② B. ③ C. ①② D. ②③
高二数学单选题中等难度题查看答案及解析
高二数学填空题中等难度题查看答案及解析
高二数学选择题中等难度题查看答案及解析