问题:
已知等比数列{a n}的公比q不为1,若向量
i
=(a 1,a 2),
j
=(a 1,a 3),
k
=(-1,1)满足(4
i
-
j
)
k
=0,则q=______.
已知等比数列{a n}的公比q不为1,若向量
=(a 1,a 2),
=(a 1,a 3),
=(-1,1)满足(4
-
)
=0,则q=______.
i |
j |
k |
i |
j |
k |
参考答案: