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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
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAcJJREFU
WEftl4mNxCAMRdmWaYdOqIMqaILFYIIZDHiziZhIQRppDo6Xz/cxPyEO9ZQBsE8Z6imgyQEv7E0K
vMquhXXBKAVZqHtp64fLtyjrjAkuInlrQmLzNmhtwxgz82+BLdI5ozOsM0F9N6wPVmeFE6xJ76Zj
n7Jw9arYQZ+AFT7hSoH176BqDC68em8jLL531qblh0XIZlVZ1je4KUStwFNrSJyRVFXhiHz8DNmh
uiGfTd2RYQfR6EzdMD29wFdiYNFESHEYhCUbAFTP0U6MF9MsFJ11xSRizagsQGBU0s07W/TXcgXL
cg8SiGqU46jp84YZdlZhlgefmlBFUj0UopEIvRqWK7P0u/aZqkhD2F5xJjqxtp8STLyIwA5LHfFK
3rcPsKKG+NxTE4kNZlEuSV0AfO+oCSCdxKeuGlRJQaYo/AsUsk1pEWcFp01dWBS49HWXZGCxI7Fj
b8sWHLDAR1HIlpS1aVfwe+ea3pXPSKNyWwiaJ74CS7gH00Bx1rw7OkS045hpl++H/cNtboYl/xYE
d7AVlmuwZ8zbYCEDNNkqBtmqXd4CCwHVNzNMm/oh8xZYgT3ZKS/sWeVW6x6l7C+t38VBQ9z5eAAA
AABJRU5ErkJggg==
)
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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==
)
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
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAANxJREFU
OE/FlOsNgzAMhN2Vs4438RyeIksYvwImgNIfFY2EFMFhn3MffEQXrJaJVgtWAu/0uogFAWzCy9Wo
uxtgRGHddELxe52kNZJ4HGs3zthCxChwL+pCLSq6CH03VbIWMNq2O5FVUdPZopOKcs9E6cmrgIxJ
3HhOOrq+f+LriA2320jG/f+gksnv3jLoc3YRyzjxGktBxaArbxsFGfaJJ8YjYNtPpAzokgT1NQvK
OalIMUZDprY+8LUqhydvffHk/NSxp0HiQ4hPaofuabpK44OnL1BZS375V9kAxvU7wJWlEf0AAAAA
SUVORK5CYII=
)
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