问题:
已知△ABC为等边三角形,且AB=2,设点M、N满足
AM
=λ
AB
,
AN
=(1-λ)
AC
,若
BN
•
CM
=-
14
9
,则λ=______.
已知△ABC为等边三角形,且AB=2,设点M、N满足
=λ
,
=(1-λ)
,若
•
=-
,则λ=______.
AM |
AB |
AN |
AC |
BN |
CM |
14 |
9 |
参考答案: