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In DeltaABC, P, Q and R are mid points o...

In `DeltaABC`, P, Q and R are mid points of the sides AB, BC, and CA respectively. If D is any point
i) then express `bar(DA)+bar(DB)+bar(DC)` in terms of `bar(DP), bar(DQ) and bar(DR)`
ii) If `bar(PA)+bar(QB)+bar(RC)=bar(a)` then find `bar(a)`.

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