以下选项中,当且仅当x的绝对值在1至6范围内表达式值为"真"的是( )。
A: (x>=-6)&&(x<=-1)||(x>=1)&&(x<=6)
B: (x>=1)&&(x<=6)&&(x>=-6)&&(x<=-1)
C: (x>=-6)||(x<=-1)||(x>=1)||(x<=6)
D: (x>=1)&&(x<=6)||(x>=-1)&&(x<=-6)
A: (x>=-6)&&(x<=-1)||(x>=1)&&(x<=6)
B: (x>=1)&&(x<=6)&&(x>=-6)&&(x<=-1)
C: (x>=-6)||(x<=-1)||(x>=1)||(x<=6)
D: (x>=1)&&(x<=6)||(x>=-1)&&(x<=-6)
举一反三
- 以下选项中,仅当x的绝对值在1至6范围内时,表达式值为“真”的是: (x>=-6)&&(x<=-1)||(x>=1)&&(x<=6)|(x>=-6)||(x<=-1)||(x>=1)||(x<=6)|(x>=1)&&(x<=6)&&(x>=-6)&&(x<=-1)|(x>=1)&&(x<=6)||(x>=-1)&&(x<=-6)
- 以下选项中,仅当x的绝对值在1至6范围内时,表达式值为“真”的是 A: (x>=-6)&&(x=1)&&(x B: (x>=1)&&(x=-6)&&(x C: (x>=-6)||(x=1)||(x D: (x>=1)&&(x=-1)&&(x
- 【单选题】设集合M={x | -1≤x≤3},N={x |1≤x≤6},则M∪N=( ) A. {x |-1≤x≤3} B. {x |-1≤x≤1} C. {x |-1≤x≤6} D. {x |-1≤x≤0}
- 求函数$y = {{1 + \root 3 \of {{x^2}} - \sqrt {2x} } \over {\sqrt x }}$的导数$y' = $( ) A: $ {1 \over 2}{x^{ - {3 \over 2}}} + {1 \over 6}{x^{ - {5 \over 6}}}$ B: $ - {1 \over 2}{x^{ - {3 \over 2}}} + {1 \over 6}{x^{ - {5 \over 6}}}$ C: ${1 \over 2}{x^{ - {3 \over 2}}} - {1 \over 6}{x^{ - {5 \over 6}}}$ D: ${1 \over 3}{x^{ - {3 \over 2}}} - {1 \over 6}{x^{ - {5 \over 6}}}$
- 当x→∞时,f(x)=x-sinax与g(x)=x<sup>2</sup>ln(1-bx)为等价无穷小,则()。 A: a=1,b=-1/6 B: a=1,b=1/6 C: a=-1,b=-1/6 D: a=-1,b=1/6