If is any vector

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

Problem

60. If u\mathbf{u} is any vector, prove that we can write u\mathbf{u} as u=(u⋅i)i+(u⋅j)j.\mathbf{u}=(\mathbf{u} \cdot \mathbf{i}) \mathbf{i}+(\mathbf{u} \cdot \mathbf{j}) \mathbf{j} .

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