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已知函数.(1)当时,讨论f(x)的单调性;(2)设g(x)=x2-2bx+4,当,若对任...
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已知函数
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAL0AAAAqCAYAAADmtFrLAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAUQSURBVHhe7ZsBkqQqDIY9mXfyOl7Go3gUBwSE
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jsBQ0O/rcqy7Sfy2KPDn9bC/FRoGisBQ0IO87usxS7UfCHW/1HGhV+JmEegF+qEioCr94rTOUAuX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)
.
(1)当
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAjCAYAAAD17ghaAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFBSURBVFhH7VbtrcMgDPRk7MQ6LONRGMUPQ/l8
oOA0wI8GNYoaAT6fjzNAhwccjk8/BMAaUqDI2JrzPQygJgBwzykAPmkk/QJ4GdjBQFB773AtFuE4
cDz3iwBcB3YAvAkFZvjRmM3othFNBZ5oNGIATwWO2CoAqCNNmpDts+Dq6cANAEtGAanUKVgwda3S
gqHKJ/juTPEMcOY5OH9hQP8bR7l+lpE4r/fm/cArVBkXshi9b4MEZ4GM+AFrVCf7lpFreu8CgZr+
UPvQty25n3hIgYQSJJNw6vd9u395EKNJJhgvJG7fptxiHxCD4ATTcf4kVx5v8YbCBRaxEjhrrmRh
PQMt4NbghAl9PZ1F/0gzuoWk0kPYYWMJ2F35lNVjGwDUfWvfAoCVX9bdNZ/0fzmA3OLzjQggl2I5
gCuxvgCOM/AHXfuAJY+rXa4AAAAASUVORK5CYII=
)
时,讨论f(x)的单调性;
(2)设g(x)=x
2-2bx+4,当
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAC8AAAAjCAYAAAAE5VPXAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFnSURBVFhH7ZiNDYQgDIU7GTuxDsswCqP0KPiD
ilp6CJpAzsTcAX4+Hm05wA83+DA7DnjW6jmDChQax+rN6tRGeasRAPz1Rfigo0U94FdHtbHNUP64
hz+lPG36tA14VlC+iDYxjK7X2Xx9lA8JaoXTdouXQs33+xfKvWCRbe4m5KiXUzUHf9ePfi+C59mj
vFcVeKvnpdVoKaXv17ecizXizPMHj+ejjUOjANVSNVEqB2zEHjbr3K6AsxuWFF/BaRp6mWMRJfH8
1ZgccBk8RQJlPG7Sct+xDCDrJPa8Myqj+n4lZFDcUeI4v7VM9Hqsux36T5MmVh43CcRHmZAJKx8c
0mf8EQU6ZFgvxrKnZFHsLPk9n6TIfon5yKZ/iN+rqvTPrZz4nld+0mrJ3rVkb17bTBt3mxDlAa2Z
8jMi5RXYJ0Uhf3P4mr5vDB8LwFq2fx5++bcsltu1wF9zGBFa/h0nqQEvVaDXuB/URRJ6vMDVCQAA
AABJRU5ErkJggg==
)
,若对任意x
1∈(0,2),存在x
2∈[1,2],使f(x
1)+g(x
2)≤0,求实数b的取值范围.
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已知函数
(a∈R).
(Ⅰ)当
时,讨论f(x)的单调性;
(Ⅱ)设g(x)=x2-2bx+4.当
时,若对任意x1∈(0,2),存在x2∈[1,2],使f(x1)≥g(x2),求实数b取值范围.
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已知函数
(a∈R).
(Ⅰ)当
时,讨论f(x)的单调性;
(Ⅱ)设g(x)=x2-2bx+4.当
时,若对任意x1∈(0,2),存在x2∈[1,2],使f(x1)≥g(x2),求实数b取值范围.
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(a∈R).
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时,讨论f(x)的单调性;
(Ⅱ)设g(x)=x2-2bx+4.当
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(Ⅱ)设g(x)=x2-2bx+4.当
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(Ⅱ)设g(x)=x2-2bx+4.当
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