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The vector component of $3 \hat{i} + 4 \hat{j} along \hat{i} + \hat{j}$ is

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i^+j^2

32i^+j^

52i^+j^

72i^+j^

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detailed solution

Correct option is D

Component of A→ along B→ isA→.B→B=3+42=72In vector form, component of A→ along B→ is72B^=72B→B=72i^+j^2=72i^+j^

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The vector component of 3i^+4j^ along i^+j^ is

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The vector component of $3 \hat{i} + 4 \hat{j} along \hat{i} + \hat{j}$ is