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下列命题中正确的是A.若x在内,则sinx>cosB.函数的图象的一条对称轴是C.函数的最...
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下列命题中正确的是( )
A.若x在
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACsAAAAjCAYAAAANDvOtAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
内,则sinx>cos
B.函数
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFcAAAAjCAYAAADhe5a7AAAAAXNSR0IArs4c6QAAAARnQU1BAACx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==
)
的图象的一条对称轴是
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACcAAAAjCAYAAAAXMhMjAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFvSURBVFhH7ZfhEcIgDIWZjJ2yTpbJKIwSE6AU
bFWCFvlR73p6HpSv75EX6njhj1uYjW+4gJ6dc+nyyKHTrgnKEYMBqOa+Ho6AgTqlehp2MVxg9NlO
B2xlvBhul4JAIT1j74aTqdPgFDMWhsHjqXAsxlqKYz7cqsoRrLTnArLfwle+DaLFSuq2tSR8tdir
/8ZS7TirG+5XC1ru41gSvO15UlHGHmhZsB2b1zpxw0sgZuU0yXWz6mB7ko/CEaS1AkIKZ92jVR8u
tqaTw2uwkT33bk79QKWK1cUzuGfqUTXs89S1LIrCVSVdlCNRzht7nx3kZEaMm83etr1FOLVUgbU5
R/Avjjk24HxqyVbGrZV/E6IWqmOtjPjZKteall1ECaS5dQ7psn4V2jpuWs5tR3XLc8+BE0UA6ajc
B8UnwImdoC81J7b+G24/iawG11T9YnDpveF4ler8t637+osp1wpzw3W1g58MmpBz45w33Kh2D52Q
HH3en55NAAAAAElFTkSuQmCC
)
C.函数
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEcAAAAqCAYAAADh2kabAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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=
)
的最大值为π
D.函数y=sin2x的图象可以由函数
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFcAAAAjCAYAAADhe5a7AAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
的图象向右平移
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAkAAAAjCAYAAABGpiBAAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADPSURBVDhPzVPRDcUgCGQydmIdlmEUR+EBYos+
2/TnvdSkidEr3HkH6IMFDzD6UpAoAShsPuQWukCIVGzTmDTOGisia7/u61AnhB0kpLAHNWXsFQNE
sVsqeQsYbXEH8ipGPFs0NlDuhTk5RRXQoSSIp9LR9ZW27OyoZ9OL34XvF+rKIwKk2XMKujXj1as1
hbgHr/ztSUjDlzydJguB1rQUdZkGM3eJU507A1mUyWNzTfzk5O2+OYX8KnsWkpz6WB3Bu1JXE3nB
6c7eMnf/ScEHGJVHxnYne6kAAAAASUVORK5CYII=
)
个单位而得
相关试题
-
下列命题中正确的是( )
A.若x在
内,则sinx>cos
B.函数
的图象的一条对称轴是![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACcAAAAjCAYAAAAXMhMjAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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==
)
C.函数
的最大值为π
D.函数y=sin2x的图象可以由函数
的图象向右平移
个单位而得
-
下列命题中正确的是( )
A.若x在
内,则sinx>cos
B.函数
的图象的一条对称轴是![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACcAAAAjCAYAAAAXMhMjAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFvSURBVFhH7ZfhEcIgDIWZjJ2yTpbJKIwSE6AU
bFWCFvlR73p6HpSv75EX6njhj1uYjW+4gJ6dc+nyyKHTrgnKEYMBqOa+Ho6AgTqlehp2MVxg9NlO
B2xlvBhul4JAIT1j74aTqdPgFDMWhsHjqXAsxlqKYz7cqsoRrLTnArLfwle+DaLFSuq2tSR8tdir
/8ZS7TirG+5XC1ru41gSvO15UlHGHmhZsB2b1zpxw0sgZuU0yXWz6mB7ko/CEaS1AkIKZ92jVR8u
tqaTw2uwkT33bk79QKWK1cUzuGfqUTXs89S1LIrCVSVdlCNRzht7nx3kZEaMm83etr1FOLVUgbU5
R/Avjjk24HxqyVbGrZV/E6IWqmOtjPjZKteall1ECaS5dQ7psn4V2jpuWs5tR3XLc8+BE0UA6ajc
B8UnwImdoC81J7b+G24/iawG11T9YnDpveF4ler8t637+osp1wpzw3W1g58MmpBz45w33Kh2D52Q
HH3en55NAAAAAElFTkSuQmCC
)
C.函数
的最大值为π
D.函数y=sin2x的图象可以由函数
的图象向右平移
个单位而得
-
给出下列命题:①
,则α在第一或四象限;②函数y=sinx+cosx,
是它的一条对称轴,
是它的一个对称中心;③函数
在
内是单调增函数;④把
的图象向右平移
个单位可得到y=2tan2x的图象;⑤在△ABC中,cos2A>cos2B是A<B的充要条件.
其中逆否命题为真命题的有( )
A.①②⑤
B.②⑤
C.②③④
D.①③⑤
-
关于函数f(x)=sinx+cosx下列命题正确的是( )
A.函数f(x)最大值为2
B.函数f(x)的一条对称轴为![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAjCAYAAAD17ghaAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAElSURBVFhH7VZbDsQgCORk3onrcBmO4lFYQW36
sLu6pvLTJk1NozAOMyiI8wPO+eUF8DLwMAMsCCDQeANF0/+jABhROCWJhGL5IkkIJDl1fh4FUJMw
hgyAUWA9gCgUMhMGAG20kAGlHWopwmoAuvskwkJ7pASgjJlogQZs9yBV8SbC4ohaiW4Rtqx092/k
fOkGMBJ0ZC6YMpWWzR6leZzsMhJ0ZG5hQMWiXtXkxTIjUSbmbiUwhX5J/o8Gfq05dsJGm5zYWPfS
jQFODAQoLbN7+fxEA6D0qy8Zwb4qzFPHnM90EyGVadcoqiMey5474z780j6Qhe4FIIkcib0YSNSj
XkScSrBdSFwAHBzlwIBa2+1SerW+AwNHEC+Aa1GWdsLWcfAC+AD29XZPz3O9+AAAAABJRU5ErkJg
gg==
)
C.函数f(x)的图象向左平移
个单位后对应的函数是奇函数
D.函数y=|f(x)|的周期为2π
-
关于函数f(x)=sinx+cosx下列命题正确的是( )
A.函数f(x)最大值为2
B.函数f(x)的一条对称轴为![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAjCAYAAAD17ghaAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAATBJREFU
WEftVokNwyAMdFdmHW/iOTwFS7jYPFXSJIWmwVIVpChRBPh83J14SBrgORSA5wDP4sb+DeDPGWBB
AHXZ2xMoWu+XaoARhVORSChWL5KEQJJL53EpgFqEMWQAjALzAUShkJkwAGhfExlQ2qEeRZgNQLtP
Aiy0R0oAyjcTTdCAdQ9SFW8iLI6oJzFFhEdZ0wVgy8dH/0bCDUyZSkuzRwmPlV1GNh2ZWxhQsahX
tXixzMguJ+a2IzCF7hT/9gg+rVsm4UZMnmise2ljgBMDAUpkdi8/P9EAKP3qS0awtwpzlZjnK+3s
oNfRV1BUR1xSPafieuuuHPhF+1nkXgCSwJHYi4FEPeolxOkI2mXEBcDCTQ4MqK2PLqTT7oTZRQ4M
LO17A9iOs2lJuJemN4AnhLENezcI+yQAAAAASUVORK5CYII=
)
C.函数f(x)的图象向左平移
个单位后对应的函数是奇函数
D.函数y=|f(x)|的周期为2π
-
关于函数f(x)=sinx+cosx下列命题正确的是( )
A.函数f(x)最大值为2
B.函数f(x)的一条对称轴为![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAjCAYAAAD17ghaAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAATBJREFU
WEftVokNwyAMdFdmHW/iOTwFS7jYPFXSJIWmwVIVpChRBPh83J14SBrgORSA5wDP4sb+DeDPGWBB
AHXZ2xMoWu+XaoARhVORSChWL5KEQJJL53EpgFqEMWQAjALzAUShkJkwAGhfExlQ2qEeRZgNQLtP
Aiy0R0oAyjcTTdCAdQ9SFW8iLI6oJzFFhEdZ0wVgy8dH/0bCDUyZSkuzRwmPlV1GNh2ZWxhQsahX
tXixzMguJ+a2IzCF7hT/9gg+rVsm4UZMnmise2ljgBMDAUpkdi8/P9EAKP3qS0awtwpzlZjnK+3s
oNfRV1BUR1xSPafieuuuHPhF+1nkXgCSwJHYi4FEPeolxOkI2mXEBcDCTQ4MqK2PLqTT7oTZRQ4M
LO17A9iOs2lJuJemN4AnhLENezcI+yQAAAAASUVORK5CYII=
)
C.函数f(x)的图象向左平移
个单位后对应的函数是奇函数
D.函数y=|f(x)|的周期为2π
-
给出下列四个命题:①函数y=-sin(kπ+x),(k∈Z)是奇函数;②函数y=tanx图象关于点( kπ+
,0)(k∈Z)对称;③函数y=(sinx+cosx)2+cos2x最大值为3;④函数y=sin(2x+
)的图象由图象y=sin2x向左平移
个单位得到其中正确命题的个数是:( )
A.1个
B.2个
C.3个
D.4
-
下列命题正确的是( )
A.在(
)内,存在x,使![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFoAAAAjCAYAAAAUhR0LAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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==
)
B.函数
的图象的一条对称轴是![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACcAAAAjCAYAAAAXMhMjAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFjSURBVFhH7ZfRrcMgDEWZjJ28jpfxKIziYhsI
iZoXaIWF9IrUjxISTq7taxJ44xE2ZuMfnEUnMcbAQOOxclMuYeQQdoRLyIC0o3I5nIA5qBuGlSAy
ph1zjqArgM2UIwhaBNdfNCkfh1u1bm0l/xfuXe7czT0m0+ACx5wbJOqWBc7lrgpEMUoZxHD6P//Q
8TvKXjcVXZQTDxKzlMWQ8XwGge2VEMyoc5uLTSQ+jkzWmO/BPsm5v+7pX791EYniO7grtY92ta0V
UQSuO1O1gqCsXAy1D/qhqSglYhq9K5xMypy0G7126okrQa3f1lAqXAkrIUqhBm69rlbuzHF1gL0e
NM+uUAqg319VtF4sCA4+lx2gS/KBd2lL1sN9kSKL4UpOaajm/XMx3BFEO9vNuYEbnDraxSqe8s8V
Tvv2RHH4w03YlCvc8SX2FFC7vhauM9XZr/31cGMC3a5aq9wP7ksFPr39BYgrHH1aD28bAAAAAElF
TkSuQmCC
)
C.函数
的周期为![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAkAAAAjCAYAAABGpiBAAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADHSURBVDhPzVPRDcUgCGQyd2IdlmEURuEpoEHL
a/rzXmrSRO0F7rgT9MGCBxh9KYgVARSKr5GYLmBE5b4RQrU7IW2N1H/7WuoYm4MYFWqQKDWvaCC0
3VFptIDZtlWgUaUTjxZCHRR7JgpOVgV0KjHioXR2faUtlR35bpv4Xfh+oW54NuNSGjymvEyNfCWT
jZMwb/nJ/n1Xd8SlVMcImiN1BW38jvj6MSW0yrgnN3J+jH+1G4q2aHfyW+gG0avR8TDyk/q3wTf9
Pmk3Xj4tXoBsAAAAAElFTkSuQmCC
)
D.函数y=2sinx的图象可以由函数
的图象向左平移
个单位得到
-
下列命题正确的是( )
A.在(
)内,存在x,使![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFoAAAAjCAYAAAAUhR0LAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
B.函数
的图象的一条对称轴是![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACcAAAAjCAYAAAAXMhMjAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAW9JREFU
WEftl9EVwiAMRXFl1skmmYMpWCKSABUqWlDJyYd4/LDS5p685IXeKC1ndTGc1eWsgomienCR0DuC
MB9RDS6i59o2CBeRAIPFzCU5ASmmjzlZA3jCyHVmDS5AU2PG4AI4aYLz1+dUXi61brUna5cbY7L2
upmGuyyxpw1TNTcq6nfX1jHGdzhK7S6BPBslr0DQ/f5VqNFzSqwXHV0yx/XAZsmbIeHprAA5VkTI
Rp3GnD+S1JxK8mAeg30q66z0xxRhFUdwZ2qd3NWxVpLCcM2Z6miIkDLnXZ2DemiSlKKYqHeG44t8
jceN/NfNxJ2g2fuqlAJXZA2I8m5Dx6yrnbtyXJ1grwfN3hVKA7TxJYt5FjPClM9NxH+zJTlAU+Qr
z9oP90WJbIYrNSVSrfvnZriHiPlst+YGanDiaCeruKo/VTiZ2wvNoQ+3YFOqcI83sStB8/974RpT
XX3b3w83l6CXu/Zm7g/3ZQY+vf0OngKdwpTpG8kAAAAASUVORK5CYII=
)
C.函数
的周期为![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAkAAAAjCAYAAABGpiBAAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAM1JREFU
OE/FU9ENQyEIpCu7DpswB1O4BAVEq2jr3yvJS9R3gYM7XqIBtzDQLeAG8EqPg1gQwDrcvkLV2QAj
CuuhEoq/VZJSSNrvFoM4Y2kgRoEzqAqVltFB6KeUyUpAL1tOIMuipKNEJQXFmYmCk2cB6Z048ei0
V31+4neJzW5HSfr7f6wSenVuSdzGySY8BA1vZYEr8+KdWbvNT2NaX60yzZMRJFVLK7XwO9hXzf1x
Z1Jq9/hBSgdZRwsPJT/fdaVOAsdS5JX6ZZiH7fsG0udOohBexs8AAAAASUVORK5CYII=
)
D.函数y=2sinx的图象可以由函数
的图象向左平移
个单位得到
-
下列命题正确的是( )
A.在(
)内,存在x,使![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFoAAAAjCAYAAAAUhR0LAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
B.函数
的图象的一条对称轴是![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACcAAAAjCAYAAAAXMhMjAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFCSURBVFhH7ZeLjcMgDIaZjJ28jpfxKIzC8RvI
kYioJVcsS9dfchXyEF/8TEN2rC/cUxnCpcwxZJK2fENmcIljDsEjXOJMLB49V8JJXH4dhlUoZk44
8gYnNMA4gxMKWgRXi9WVL2VTECrHreT/ws1y584+JUPPrSug3PWNIxolJJlO651qe00MFd08h3xA
s8TNVB6xkVDdKzHVRl3GXByccoS1DuZ7sNnb3VnX7Fq3UccUQRRncFdqOyFqzSmAG8r5gJPiuRj6
HDQUnNIiptG7wuEkzmHc6LXTTNyp2vt6KBWuHQszwj/Mul65HybrH5pqY+qo14b92xr3AeGcmVtU
OsDDXN4P94cU2QzXckpDtd4/DcJaVb/t1rqBGRx0bRWvZAq3Whz2cF499/tP7D3thRuaam+sKzIO
65q+cE/lGC7nH4grHH24Ruv7AAAAAElFTkSuQmCC
)
C.函数
的周期为![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAkAAAAjCAYAAABGpiBAAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADASURBVDhP1ZLrDcMwCISZjJ1Yh2UYxaPQAH5g
B7X900g9yZGTfIFzDtAv9M+QKAEoFAu5BSREF6bamNSfNVZE1ngdmu2EMCAhhRpqyhgVHSLfTQVk
LWC0xQqyKpfR3sKhvhfmDnmVdZJxb6cbBafxd3oayjFUyyG/ftAvIMtseCkDtr888+rzlfJzqIls
X+b8TLWnY1xKSGiFa7pDm7/QAaUJTdqgOeeHJmQn2rpc5se9Q2Y0hxprtb0bL/QopPoCaTdePg/5
19QAAAAASUVORK5CYII=
)
D.函数y=2sinx的图象可以由函数
的图象向左平移
个单位得到