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下列函数中,在区间(0,2)上为增函数的是A.y=-x+1B.y=C.y=x2-4x+5D...
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下列函数中,在区间(0,2)上为增函数的是( )
A.y=-x+1
B.y=
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABIAAAASCAYAAABWzo5XAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADASURBVDhP7ZNBEoMgDEVzLhY5DntuwpqDsOUg
LjjKbwJFK01brTNdNTMOCPJ8SZRgBBHh9PUKZK2/W6M/6GPJflijEvqnwAm1eRWE3X2XPWhUkZiR
qkKCoJ7jIAioicXMhpwwkkdrAq/pWUbZ338Hv+5qTeYoYsSk6dkNpJxz24mO4OLSCzeBNK0ghSmB
2iiTPj7E9upm1q0GSA/qnIfG6OBMmbvm5ZBaWanZCW2ru2Is0YFcvA5SvlpdNhqi34BuBINr3Mjo
vF0AAAAASUVORK5CYII=
)
C.y=x
2-4x+5
D.y=
相关试题
-
下列函数中,在区间(0,2)上为增函数的是( )
A.y=-x+1
B.y=![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABIAAAASCAYAAABWzo5XAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADASURBVDhP7ZNBEoMgDEVzLhY5DntuwpqDsOUg
LjjKbwJFK01brTNdNTMOCPJ8SZRgBBHh9PUKZK2/W6M/6GPJflijEvqnwAm1eRWE3X2XPWhUkZiR
qkKCoJ7jIAioicXMhpwwkkdrAq/pWUbZ338Hv+5qTeYoYsSk6dkNpJxz24mO4OLSCzeBNK0ghSmB
2iiTPj7E9upm1q0GSA/qnIfG6OBMmbvm5ZBaWanZCW2ru2Is0YFcvA5SvlpdNhqi34BuBINr3Mjo
vF0AAAAASUVORK5CYII=
)
C.y=x2-4x+5
D.y=
-
下列函数中,在区间(0,2)上为增函数的是( )
A.y=-x+1
B.y=![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABIAAAASCAYAAABWzo5XAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADASURBVDhP7ZNBEoMgDEVzLhY5DntuwpqDsOUg
LjjKbwJFK01brTNdNTMOCPJ8SZRgBBHh9PUKZK2/W6M/6GPJflijEvqnwAm1eRWE3X2XPWhUkZiR
qkKCoJ7jIAioicXMhpwwkkdrAq/pWUbZ338Hv+5qTeYoYsSk6dkNpJxz24mO4OLSCzeBNK0ghSmB
2iiTPj7E9upm1q0GSA/qnIfG6OBMmbvm5ZBaWanZCW2ru2Is0YFcvA5SvlpdNhqi34BuBINr3Mjo
vF0AAAAASUVORK5CYII=
)
C.y=x2-4x+5
D.y=
-
下列函数中,在区间(0,2)上为增函数的是( )
A.y=-x+1
B.y=![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABIAAAASCAYAAABWzo5XAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADASURBVDhP7ZNBEoMgDEVzLhY5DntuwpqDsOUg
LjjKbwJFK01brTNdNTMOCPJ8SZRgBBHh9PUKZK2/W6M/6GPJflijEvqnwAm1eRWE3X2XPWhUkZiR
qkKCoJ7jIAioicXMhpwwkkdrAq/pWUbZ338Hv+5qTeYoYsSk6dkNpJxz24mO4OLSCzeBNK0ghSmB
2iiTPj7E9upm1q0GSA/qnIfG6OBMmbvm5ZBaWanZCW2ru2Is0YFcvA5SvlpdNhqi34BuBINr3Mjo
vF0AAAAASUVORK5CYII=
)
C.y=x2-4x+5
D.y=
-
下列函数中,在区间(1,3)上是增函数的为( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADUAAAASCAYAAAD7T5b+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFlSURBVEhL7ZbBDcMgDEU9Vw6Mkzub5MwguTJI
D4zi2gQIJaQBBEiVGqlSWwH28/82AZz8AAAO/0xmskCjn/EREoI/VKOkv6+UUShAoDJnBYqhapr7
W4G72k9LN3QaoRqdcNnWFcqerlGmSmnpRqxQGBTkCsS/exHROR9QvtIhFidI+VTFzkDZfDO+1CqC
HAV1BEcl2D6cnKS6H08odu5ek37VjVLuiERCjSruPFfh0r6q7SmjBCl4AtXV8E4p60tAXwBDKsW1
qAvyfXW2p9gpVZaLY9xCsQUcFAWQiUrNUPvqptMajshBaVIqHcvlMR+gBCkkmyt2TWPfd/vntgAu
28t+T6HYeuwQ7iHrFBoeHy3zSHcL5Ruz1dcPka1ih1oeyg8C4V3hJ2ENkR1w5wuy3xou31HTzuOu
FJzV6n9PXQsKxo7Uc0g8qt244LUtCMs2BwqS27gx56JtrNYUpYqy6bhoBtQbhbRm3ZPCEhEAAAAA
SUVORK5CYII=
)
B.y=-2x+1
C.y=x2-4x+5
D.
-
下列函数中,在区间(0,2)上为增函数的是( )
A.y=-3x+1
B.y=![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAAXCAYAAAALHW+jAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAEDSURBVEhLtZRNDoQgDIV7LhY9jntuwpqDsOUg
LjhKp+VPRMaJyJCYSJCP99qHQDcDAOjx8wt4tz5ag/8AvT6saV/PELtPB+/wpCuE3xlSpnPAECg0
Mrx+C2xgwSLBe8tCDGQxR2QNMMsMlpBriDYVYa6GXRtb20uAJBHKtk/AEi20uYkpEVDnSVkXNKkl
UnY8sFzWBaY5cNcB0WK9swfsWw3T92PYQOH5xGENpXGdzXbX47vsWSHC2ck0UOxKv+pt4kY1se2a
4rZcy+3ycxCA2C/5jEmQuve0tsvOuQgyCkiZfV2wKSpNKtcEm0Eb2xGVy4C7UQTKrAOKXVG5TGFp
8wzwA2xQSLmMKejlAAAAAElFTkSuQmCC
)
C.y=x2-4x+3
D.y=
-
下列函数有两个零点的是( )
A.y=x2-4x+3
B.y=3x+10
C.y=x2-3x+5
D.y=log2
-
函数y=-x2+4x+5,x∈[1,4]的最大值和最小值分别为( )
A.5,8
B.1,8
C.9,5
D.8,9
-
二次函数y=3x2+(a-1)x+6在区间(-∞,1]上是减函数,则a的取值范围是( )
A.a>1
B.a≥6
C.a≤-5
D.a<-5
-
下列函数中,在区间(-∞,0)上是增函数的是( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAD8AAAAjCAYAAAAjS9I/AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFKSURBVGhD7ZjtDYQgDIaZjJ1Yh2UYhVF6bQU1
ih4QMHy9CV68H6QPbV8aBUysBT+rxoG3GqSQoK17j9AY8EaBEALXjPAsA2rBu9cILfgxtOAXfKwW
/CfKGEKixXvTPb8tZdz/fxQN7zeOWTdlDiG19WHZp5dlbQmjXMakhj0uytT5vYgahOdnoB+N/gZ+
P/zQim3eTLmyvwZmQF+iDAb3sMLKy3xo/xKL9+YnB3a4pMWslz/zVsseC1xLB48toKpE2Di8xIyr
4kbn1Sw8hsbGoyqUOypzCCmmhwHrgC/u7o3oZcAS9tzvwyrccngobfXhTT5zuxdtN1PaEPYA734b
F1UnBU8Qhy/FD0hdw5NnSYTKNeTO4dmxs6/hzuENZj7/e0DH8FTy1MLU49zKaIJpt1On8GRe0kft
nT+F/GXA6qfnK2jBz6qJ4QF+uCXMh/cJU1EAAAAASUVORK5CYII=
)
B.y=|x-1|
C.y=x2-4x+8
D.
-
下列函数中,在区间(-∞,0)上是增函数的是( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAD8AAAAjCAYAAAAjS9I/AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAGGSURBVGhD7ZkBDsMgCEU9mXfyOl7Go3gUBq5a
s3UdsNbodEmzNLPCE/hiZ2Dij5mYHRb8X0Q/erDGgo98mv+IfHBgjMFrRvgU7ABuwc+W9ivyK+0n
VPuV9j2nvaIJYet2mpv2+eflAu9JdpOTJ+Z8v5lWNiE8BP0oNrzeRH5Snpa/2zyfwQS3pYv1UNpi
ilR9f4kXHcInroN6DL5ajBvhy+JXNVtKi1u8Sv+2tH+NSgD/cjzi1Hoec+yLLvISu5Kx5GMFv6tk
xKgzBVOw5jp4gQHx0A0+grcbPJaAkxyK2SY7h7cYcXe50HWs9sW1pPruhnTPgipvQthJ9W3ghwar
7PPXq/s3jxr9ftJgmYi7e6n3Rv60N3OsN7g7yN57NXc8R65oEYFgCYm06QN8cxiVQcpOChJB7LrE
b5CGhqcm1P4gyIPDpxZclOp1ig0OHzDy0j8ldvyB4Snl6YxDNZ7OOiiCsjPPoPB0WLG53c7KLyE/
ecvT8GWGSuZvfWjB37q8HU8+deQfuCXMhzVEHqwAAAAASUVORK5CYII=
)
B.y=|x-1|
C.y=x2-4x+8
D.