题目
题型:不详难度:来源:
p |
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2
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a |
b |
p |
答案
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2
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∴
p |
p |
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2
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2
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开方可得 |
p |
故答案为[1,3].
核心考点
试题【已知向量p=a|a|+2b|b|,其中a、b均为非零向量,则|p|的取值范围是 ______.】;主要考察你对平面向量模和夹角的坐标表示等知识点的理解。[详细]
举一反三
a |
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CA |
CB |
p |
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2
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p |
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2
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p |
p |
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2
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2
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p |
a |
b |
a |
b |
CA |
CB |