已知△ABC的重心为P,若实数λ满足:+=λ,则λ的值为A.2         

已知△ABC的重心为P,若实数λ满足:+,则λ的值为

A.2                     B.                     C.3                    D.6

答案

C

解析

:如示意图,∵+=,

+=2+.又=,∴+==.

+=3,λ=3.

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