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下列结论正确的是A.当x>0且x≠1时,lgx+≥2B.当x>0时,+≥2C.当x≥2时,...
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下列结论正确的是( )
A.当x>0且x≠1时,lgx+
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABcAAAAjCAYAAAB/wZEbAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAEvSURBVEhL7VaJDcMgDPRk7MQ6LNAxGIVRXA4C
4XFSpwpSKyVSpBass30+2yFe+NBCbP4R8ODYkGEX9LnqIveWiSi+K8BTsJ7tAz6X7aFFlPIqWlID
Qef5tV7XSLom0mFNVg+4SFysz16oO3/D299zHtiZaxrWqLOhBQ5snNr3PTs4ulDbekr/FTw4w+bK
glQ42MBBybAf695spRptXts+NY7zrsZAizb1/+41g4OS5hJZdMs4Da62HiUYAB/XKYMjysp3Vk5H
0QSOeBDAuQASuLftGJ3BcT/VY8hWKkEEF1Ib5rdUaA8BfPjUoEJJcLb5mooOT2QJSnBdM460SuaU
uevTLmfjOcC6s6Kog0CmwTXyKzlXSDyZ9OApEkEBnZq00MLILal3s/3LsbB0nr8ByGhzn78YZpYA
AAAASUVORK5CYII=
)
≥2
B.当x>0时,
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABIAAAASCAYAAABWzo5XAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADASURBVDhP7ZNBEoMgDEVzLhY5DntuwpqDsOUg
LjjKbwJFK01brTNdNTMOCPJ8SZRgBBHh9PUKZK2/W6M/6GPJflijEvqnwAm1eRWE3X2XPWhUkZiR
qkKCoJ7jIAioicXMhpwwkkdrAq/pWUbZ338Hv+5qTeYoYsSk6dkNpJxz24mO4OLSCzeBNK0ghSmB
2iiTPj7E9upm1q0GSA/qnIfG6OBMmbvm5ZBaWanZCW2ru2Is0YFcvA5SvlpdNhqi34BuBINr3Mjo
vF0AAAAASUVORK5CYII=
)
+
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABIAAAAkCAYAAACE7WrnAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADzSURBVEhL7ZVLDoQgDIZ7LhYcxz03Yc1B2PYg
LjhKp+UxREXR6DiTiSREF/L79e8DoIsWXKRDNwkFRxo0udDnXidCQwDA+6xQhEAyj1An/f/pUSxG
qaO0DW4X5U0t0u+M9xc/SFTMPPOU+D4b2lG6VSIROrqaJx6hiY33eRScjt2v852EhqeBdjS/ofYR
yUjhw8iia+NknxD/3+lK1aoxID/k4TXUkdAoSAlpa7iB9z4KWAWk7BjflwWJTMRebSjV0CJZopoL
oTGE2afAT9cYuxOPBg5JqIpQyVgCST61MrZo2tEqAmUbofVbeJE1ofpq074AAU4mHJIMY8oAAAAA
SUVORK5CYII=
)
≥2
C.当x≥2时,x+
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAAjCAYAAABCU/B9AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAACuSURBVDhP7ZSLDcMwCESZjJ1Yh2UYxaNQzglO
3To/palUqZasyNIF8PEw+YlFJ7R+UVzUmdi1vOfsI5s4EcU+Iq7BzOUvbrYedaM2BD5PW6xvzMV2
b5B1Y+S8zN4X1d1YxhfH6nM+59yx+jSjACnYaOcl1WxdcWUMKYQS8vFqPhflIG1d2DcFeA5SP+do
kS0irz0u+UMVowSAbjIDH5d+Bb+WAYA436p0ZqT8UZAeDDeKw2COEx0AAAAASUVORK5CYII=
)
的最小值为2
D.当0<x≤2时,x-
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAAjCAYAAABCU/B9AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAACuSURBVDhP7ZSLDcMwCESZjJ1Yh2UYxaNQzglO
3To/palUqZasyNIF8PEw+YlFJ7R+UVzUmdi1vOfsI5s4EcU+Iq7BzOUvbrYedaM2BD5PW6xvzMV2
b5B1Y+S8zN4X1d1YxhfH6nM+59yx+jSjACnYaOcl1WxdcWUMKYQS8vFqPhflIG1d2DcFeA5SP+do
kS0irz0u+UMVowSAbjIDH5d+Bb+WAYA436p0ZqT8UZAeDDeKw2COEx0AAAAASUVORK5CYII=
)
无最大值
相关试题
-
下列四个结论中,正确结论为( )
A.当x>0且x≠1时,lgx+
≥2
B.当x>0时,
+
≥2
C.当x≥0时,x+
的最小值为2
D.当x>0时,x3+
的最小值为2
-
下列结论正确的是( )
A.当x>0且x≠1时,lgx+
≥2
B.当x>0时,
+
≥2
C.当x≥2时,x+
的最小值为2
D.当0<x≤2时,x-
无最大值
-
下列结论正确的是( )
A.当x>0且x≠1时,lgx+
≥2
B.当x>0时,
+
≥2
C.当x≥2时,x+
的最小值为2
D.当0<x≤2时,x-
无最大值
-
下列结论正确的是( )
A.当x>0且x≠1时,lgx+
≥2
B.当x>0时,
+
≥2
C.当x≥2时,x+
的最小值为2
D.当0<x≤2时,x-
无最大值
-
下列结论正确的是( )
A.当x>0且x≠1时,lgx+
≥2
B.当x>0时,
+
≥2
C.当x≥2时,x+
的最小值为2
D.当0<x≤2时,x-
无最大值
-
下列结论正确的是( )
A.当x>0且x≠1时,lgx+
≥2
B.当x>0时,
+
≥2
C.当x≥2时,x+
的最小值为2
D.当0<x≤2时,x-
无最大值
-
下列结论正确的是( )
A.当x>0且x≠1时,lgx+
≥2
B.当x>0时,
+
≥2
C.当x≥2时,x+
的最小值为2
D.当0<x≤2时,x-
无最大值
-
下列结论正确的是( )
A.当x>0且x≠1时,lgx+
≥2
B.当x>0时,
+
≥2
C.当x≥2时,x+
的最小值为2
D.当0<x≤2时,x-
无最大值
-
下列结论正确的是( )
A.当x>0且x≠1时,lgx+
≥2
B.当x>0时,
+
≥2
C.当x≥2时,x+
的最小值为2
D.当0<x≤2时,x-
无最大值
-
下列结论正确的是( )
A.当x>0且x≠1时,lgx+
≥2
B.当x>0时,
+
≥2
C.当x≥2时,x+
的最小值为2
D.当0<x≤2时,x-
无最大值