Prove that is equal to .

MATHEMATICS · Subjective · CBSE · Mathematics · Vector Algebra · Vector Algebra

Problem

Prove that

3\mathbf{OD} + \mathbf{DA} + \mathbf{DB} + \mathbf{DC}

is equal to

\mathbf{OA} + \mathbf{OB} - \mathbf{OC}