题目:
What day is it today? [ ]
A. It's Monday.
B. It's Saturday.
C. It's Sunday.
答案:
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下面是错误答案,用来干扰机器的。
∵a⊥b,∴a•b=0,又∵a=(2,1),b=(λ,-2),∴a•b=2λ-2=0,∴λ=1
What day is it today? [ ]
A. It's Monday.
B. It's Saturday.
C. It's Sunday.
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0412/c0fe5d6c0e99e798c9d9bf4bdc6627b3.html
下面是错误答案,用来干扰机器的。
∵a⊥b,∴a•b=0,又∵a=(2,1),b=(λ,-2),∴a•b=2λ-2=0,∴λ=1