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已知是互相垂直的单位向量,,且垂直,则下列各式正确的是A.λ=1B.λ=2C.λ=3D.λ...
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已知
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAC0AAAAeCAYAAAC49JeZAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAVxJREFU
WEftVu0NhSAMZCT3cQuGcAl2eAMwB4k7sEQfVdGCRltQo4kk/tC03PXslwL26aFrO+jZ9mcZrnGV
6Oq+g6b9iVxOMc5wVTggexroTpBbhokcF9x3Ks3/fW/NaX6El1rK0uNSKvzLP9J8reosP6Xr9ON7
E6U9WL0MGm09/5YqSznuRNqBCZNxJuoMKG3hetpluIH0GKlxi1zOkACqVNxzLsdVQFX1FjTuIjSC
q0hX4CpvNVmYDBDBWXTj4sMyJkY1uKPSVNlBbQ1JHW59mwiUkj7ERV5xA83+/JzTs0FegLNzFghR
DX3lJ+0aSeGjSJHolLK0mzHRsMq3SZcR3g/RO5d0riGViJjVpOUKF3hkLfgVpFHpU9OjQDehS0jN
rM4er7Qz6zb8aNKYFltz7rmkQ/ElS1t4jwEck46jfWr0d0z4dFrGzXNJk2PSwrK5w/wjfYfKiPFK
pf9Ul95KtqnWPwAAAABJRU5ErkJggg==
)
是互相垂直的单位向量,
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAKIAAAAeCAYAAACv+sUVAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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=
)
,且
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACQAAAAWCAYAAACosj4+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAASdJREFU
SEvtlv0NhCAMxTuS+9wWDMES7HADMIeJO7DEOyrI8eFHg8Z4yRH9x7yWX1+LSrh0TdAvjUmcs9WT
OFYqnDSG11uqBio9+YXr7wE62iTLnenlpQiVZx0SbiOUPXGGhOhbsuuH+leARhMPjxl3kW91yFmF
Ax7cCORglcG+P7gRyFmoI3t8MwuHUp/JVzIakCCBdIZDu0aY5UWsLNxKcARiO/3QJYAQeB1PzM+F
zhDb+Weg2Zlid06gYNdKkFqS65p2BcC1ggksTuQxCz/LLF2+Rz0sHNOeLnZovWBisSqsCPT5s3NA
7eniPbfmk8p2LUPH9A7+SouhulbVrhmm7kiWOLZs+QXhocuhgrIbJm70Pb31rLYldpbd5ZUo6A90
ZNPjHPoAadlnvsrWB5MAAAAASUVORK5CYII=
)
垂直,则下列各式正确的是( )
A.λ=1
B.λ=2
C.λ=3
D.λ=4
相关试题
-
已知
是互相垂直的单位向量,
,且
垂直,则下列各式正确的是( )
A.λ=1
B.λ=2
C.λ=3
D.λ=4
-
已知
,
是平面内两个互相垂直的单位向量,若向量
满足
,则
的最大值是( )
A.1
B.2
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAMlJREFU
OE/NU9ENxCAI1Y3cxy0cwiXYwQGcg6Q7uAQnKt5pTer5VZImYnk8eKCmbGoyrfV8tfYZPFuOXF3f
414ORmBd6ucipVbusrmh5xTJAbZwJOAEzX8EJ8TOxBlSdJ39EXwTlFvYZZ7BCIqki/+Yh/7zcu3P
OVF0QCJd2UwKto3B9jyrDUNwFGVGMqoQQjl6o8j4q5xnMCvcp8UBWTT2v2WXCir7L5gF6gsii6Jq
+UPPNv9k9qOHcXlDyvgzMJfM7EfMIvcu+APTLYOZ98eL2wAAAABJRU5ErkJggg==
)
D.
-
已知
,
是平面内两个互相垂直的单位向量,若向量
满足
,则
的最大值是( )
A.1
B.2
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAMlJREFU
OE/NU9ENxCAI1Y3cxy0cwiXYwQGcg6Q7uAQnKt5pTer5VZImYnk8eKCmbGoyrfV8tfYZPFuOXF3f
414ORmBd6ucipVbusrmh5xTJAbZwJOAEzX8EJ8TOxBlSdJ39EXwTlFvYZZ7BCIqki/+Yh/7zcu3P
OVF0QCJd2UwKto3B9jyrDUNwFGVGMqoQQjl6o8j4q5xnMCvcp8UBWTT2v2WXCir7L5gF6gsii6Jq
+UPPNv9k9qOHcXlDyvgzMJfM7EfMIvcu+APTLYOZ98eL2wAAAABJRU5ErkJggg==
)
D.
-
已知
,
是平面内两个互相垂直的单位向量,若向量
满足
,则
的最大值是( )
A.1
B.2
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAMlJREFU
OE/NU9ENxCAI1Y3cxy0cwiXYwQGcg6Q7uAQnKt5pTer5VZImYnk8eKCmbGoyrfV8tfYZPFuOXF3f
414ORmBd6ucipVbusrmh5xTJAbZwJOAEzX8EJ8TOxBlSdJ39EXwTlFvYZZ7BCIqki/+Yh/7zcu3P
OVF0QCJd2UwKto3B9jyrDUNwFGVGMqoQQjl6o8j4q5xnMCvcp8UBWTT2v2WXCir7L5gF6gsii6Jq
+UPPNv9k9qOHcXlDyvgzMJfM7EfMIvcu+APTLYOZ98eL2wAAAABJRU5ErkJggg==
)
D.
-
已知
,
是平面内两个互相垂直的单位向量,若向量
满足
,则
的最大值是( )
A.1
B.2
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAMlJREFU
OE/NU9ENxCAI1Y3cxy0cwiXYwQGcg6Q7uAQnKt5pTer5VZImYnk8eKCmbGoyrfV8tfYZPFuOXF3f
414ORmBd6ucipVbusrmh5xTJAbZwJOAEzX8EJ8TOxBlSdJ39EXwTlFvYZZ7BCIqki/+Yh/7zcu3P
OVF0QCJd2UwKto3B9jyrDUNwFGVGMqoQQjl6o8j4q5xnMCvcp8UBWTT2v2WXCir7L5gF6gsii6Jq
+UPPNv9k9qOHcXlDyvgzMJfM7EfMIvcu+APTLYOZ98eL2wAAAABJRU5ErkJggg==
)
D.
-
设
=(m+1)i-3j,
=i+(m-1)j,其中i,j为互相垂直的单位向量,又
,则实数m=( )
A.3
B.2
C.-3
D.-2
-
已知向量
=(2,m),
=(-1,m),若2
-
与
垂直,则|
|=( )
A.1
B.2
C.3
D.4
-
已知向量
=(2,m),
=(-1,m),若2
-
与
垂直,则|
|=( )
A.1
B.2
C.3
D.4
-
已知向量
=(2,m),
=(-1,m),若2
-
与
垂直,则|
|=( )
A.1
B.2
C.3
D.4
-
已知向量
=(2,m),
=(-1,m),若2
-
与
垂直,则|
|=( )
A.1
B.2
C.3
D.4