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If  \vec{A}=\hat{i}+\hat{j}+\hat{k} and \vec{B}=2\hat{i}+\hat{k} then \vec{A}+2\vec{B} is

Option: 1

5\hat{i}+\hat{j}-\hat{k}


Option: 2

3\hat{i}+\hat{k}


Option: 3

3\hat{i}+2\hat{k}


Option: 4

5\hat{i}+\hat{j}+3\hat{k}


Answers (1)

best_answer

\vec{A}+2\vec{B}=(\hat{i}+\hat{j}+\hat{k})+2(2\hat{i}+\hat{k})=5\hat{i}+\hat{j}+3\hat{k}

Posted by

Rakesh

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