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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
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAATZJREFU
SEvtVtsNwyAMdFdmHTbhtyswBUsQDgfCw1GcKkj9CFKkhpKzfT7bfGJatGoBfNWiVcCZETV4cNGQ
iS6ov1CCe4u8pGcFeHbWR/uCz2l7aRGlvIqWXEDQOT/W6wpJX6E6vO7UCy6ShjFRE/Xk73st908T
GqIz9zSsCaSRIgzY1LWfWwc4qlBbekr7FTw4E82dAakwsIODkmE+1rnZSjWd+e7z1LjIsxoNLZ2p
74dVBgclzZ+IgqjhPzeuNh/FGQCf54nB4WXlm5XT0T+Bw5/BAYGmDO5tCzaC8/uUjyFaKQUJXAht
6N9Soj0EcHHVoEJJcPa4TV3IEpSAthpxolVSMTF3fdhlb9wHWLdXFHVSH9OwAEBLg2RcIfF8pAfP
ngjS6tSkhRZuuSX0rrf/2BaWztANM0g66us3zwsAAAAASUVORK5CYII=
)
≥2
B.当x>0时,
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABIAAAASCAYAAABWzo5XAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAMRJREFU
OE/tk9sNwyAMRc1G7MMWHoIl2IEBmAMpO7CEa4NIE8tK0yLlq/7h6avji3HEASqcc3rr81qEdHCW
tX25Z2b8hU6ePehRTdIeBFiodYZK6bQeYDeJGhVEKk1EEksZLXO3j1pBJrNFviDiq60Q7uVZRDkM
DyDsp1ZDViZCkPLsBoeccz+JHsjHbRinvoiUldiYmqCPPBnjId5md7JBNYUkUeY4MeYLahX9aoGT
hGr5r23RE/i4LiRlCdUy0fTuF6EXemVVqbfIaJsAAAAASUVORK5CYII=
)
+
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABIAAAAkCAYAAACE7WrnAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAPpJREFU
SEvtVdENhCAM7W3EPm7BECzBDgzAHE3cgSV6bdEzKoJG410uNiH4IY/X1/bxIg64IgToioArQDSr
KlCKZMFSTO3rtoHQi3a8zgIpCST/ADXK/58aaTNKH+Xlsd6UN41IezI+f/wgo1HMM3vbRs5qdJTd
JiMBOhrFEw/QTMb7NErR6vTb4U1Cz25gIy1fqH2MxFL4MDLolp3sA+L7o51YlXoMKHSDeXWTJRQa
UlKqmRuEEBTAGSDjev1eNyQyI9aqgjSlpswyqyUQek846JR4jwXbnWnUcUrCagQaK5aJZJ1KFVsN
be8MgXGF1NojvKqasPrq0L4BH+bvi6BZ4OYAAAAASUVORK5CYII=
)
≥2
C.当x≥2时,x+
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAAjCAYAAABCU/B9AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAALpJREFU
OE/tVMENwzAIdFdmHTZhDqbwEhRIcOuGtERJ1U+RrMjSBc7cwU00WjUMXI1WBTqDDbiTQAOhvk0z
gxmNv54K2JOx4B882lrthgtifV4O8izMSbnfmOWLmeMxn765RX/D+dxYXcc55g5Ilhk1I6k3xv1R
alWwC4ENqQFR4XkMuTuBOm0fOIti9kxKP9cYmVkz7y2X+MHBRsGMzrgaXh/9anynYQaC2FXRmQyZ
7rrrRDlgjkNjdQeJaHB/o3N7rgAAAABJRU5ErkJggg==
)
的最小值为2
D.当0<x≤2时,x-
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAAjCAYAAABCU/B9AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAALpJREFU
OE/tVMENwzAIdFdmHTZhDqbwEhRIcOuGtERJ1U+RrMjSBc7cwU00WjUMXI1WBTqDDbiTQAOhvk0z
gxmNv54K2JOx4B882lrthgtifV4O8izMSbnfmOWLmeMxn765RX/D+dxYXcc55g5Ilhk1I6k3xv1R
alWwC4ENqQFR4XkMuTuBOm0fOIti9kxKP9cYmVkz7y2X+MHBRsGMzrgaXh/9anynYQaC2FXRmQyZ
7rrrRDlgjkNjdQeJaHB/o3N7rgAAAABJRU5ErkJggg==
)
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