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若函数y=x2-3x-4的定义域为[0,m],值域为,则m的取值范围是A.(0,4]B.C...
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若函数y=x
2-3x-4的定义域为[0,m],值域为
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEMAAAAjCAYAAADPPrcpAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
,则m的取值范围是( )
A.(0,4]
B.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEMAAAAjCAYAAADPPrcpAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
C.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACoAAAAjCAYAAADizJiTAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFNSURBVFhH7ZeLDcMgDESZjJ1Yh2UYhVFcCJ9C
CrGpEgxVkSpFCpVezofPCNhkiU044QdArQYpBAj/U4Zd+I6iBpTUYA889+xguVnboNZGyCCkUauC
loU2auXSv5Vc3KOFpPFQSR0cy7VI7clqCSIfLh5UEqg7Tew+daAWtIz90rWhzxKH9zPb01HB1MNj
JTNoBegVTBuf6qGEQCkt1wZ93Ia0QOEHJQYKPygxUJYB9dF8FSgoaHmQzs+32/ciUFDQUZj0MaP/
S/t7gbIcaC9Qbgf1ynhVv1v9QKGBlk0fyflhSGKg4KDe4Dkzw4Tfu44MQw7IjoJaY6oJn2t6aoKm
k9ucOydPT52hBK/FHnemyq/4Rz21A+kpvnUod2HmX5egRklgviplhbqg3tDVVO8O1Mwp/1zDJmie
aoopXwheC3ybe9NN+we9W/JtFH0BNwGlIGWmqs4AAAAASUVORK5CYII=
)
D.
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若函数y=x2-3x-4的定义域为[0,m],值域为
,则m的取值范围是( )
A.(0,4]
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEMAAAAjCAYAAADPPrcpAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAGrSURBVGhD7ZfrDcMgDISZjJ1Yh2UYJaNQTB7l
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z6cwzjdPFdwWBO34IYyrISeE0R7Etd7aekZmyGnXCnWRkzB2E7t7R4mMKjPk1KWM/9XJRQ23UcmQ
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ftcGzmn0xH39AAAAAElFTkSuQmCC
)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACoAAAAjCAYAAADizJiTAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFNSURBVFhH7ZeLDcMgDESZjJ1Yh2UYhVFcCJ9C
CrGpEgxVkSpFCpVezofPCNhkiU044QdArQYpBAj/U4Zd+I6iBpTUYA889+xguVnboNZGyCCkUauC
loU2auXSv5Vc3KOFpPFQSR0cy7VI7clqCSIfLh5UEqg7Tew+daAWtIz90rWhzxKH9zPb01HB1MNj
JTNoBegVTBuf6qGEQCkt1wZ93Ia0QOEHJQYKPygxUJYB9dF8FSgoaHmQzs+32/ciUFDQUZj0MaP/
S/t7gbIcaC9Qbgf1ynhVv1v9QKGBlk0fyflhSGKg4KDe4Dkzw4Tfu44MQw7IjoJaY6oJn2t6aoKm
k9ucOydPT52hBK/FHnemyq/4Rz21A+kpvnUod2HmX5egRklgviplhbqg3tDVVO8O1Mwp/1zDJmie
aoopXwheC3ybe9NN+we9W/JtFH0BNwGlIGWmqs4AAAAASUVORK5CYII=
)
D.
-
若函数y=x2-3x-4的定义域为[0,m],值域为
,则m的取值范围是( )
A.(0,4]
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEMAAAAjCAYAAADPPrcpAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAGrSURBVGhD7ZfrDcMgDISZjJ1Yh2UYJaNQTB7l
lUDIkYBEpP4oUY399XwYpudzEGCTxZ/AhOGo4RkMJTRjbP1wqZdAZovkl+97U2U9jEVqLtRWj9KC
gBzfadmsJQD1BsDNpxrGopSnBKsCt3ijGo9NzxS23KphRLVRyxzVL1ryrX2YMBoZ44HBUIIllUDr
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z6cwzjdPFdwWBO34IYyrISeE0R7Etd7aekZmyGnXCnWRkzB2E7t7R4mMKjPk1KWM/9XJRQ23UcmQ
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ftcGzmn0xH39AAAAAElFTkSuQmCC
)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACoAAAAjCAYAAADizJiTAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFNSURBVFhH7ZeLDcMgDESZjJ1Yh2UYhVFcCJ9C
CrGpEgxVkSpFCpVezofPCNhkiU044QdArQYpBAj/U4Zd+I6iBpTUYA889+xguVnboNZGyCCkUauC
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)
D.
-
若函数y=x2-3x-4的定义域为[0,m],值域为
,则m的取值范围是( )
A.(0,4]
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEMAAAAjCAYAAADPPrcpAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFiSURBVGhD7ZbREYMgDECZjJ1Yh2UYhVFSgqih
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RK5CYII=
)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACoAAAAjCAYAAADizJiTAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
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xZUEYkfKk5CqplFf8TdOBbyET3Q1bVGrQQoBwi9l4pt0NEQNKKnBptdOltq1LmptlAwYxVUUYxTn
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EPWxUK6d6OmKGiXh5vG6jKaoD3RRcddQlAmoiuanmmLRRmDcTEz4RFfzElGAHzcBpSAVSMnqAAAA
AElFTkSuQmCC
)
D.