What is the component of \( (3 \hat{\mathrm{i}}+4 \hat{\mathrm{j}}) \) along \( (\hat{\mathrm{i}...

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What is the component of \( (3 \hat{\mathrm{i}}+4 \hat{\mathrm{j}}) \) along \( (\hat{\mathrm{i}}+\hat{\mathrm{j}}) \) ?
(1) \( \frac{1}{2}(\hat{\mathrm{j}}+\hat{\mathrm{i}}) \)
(2) \( \frac{3}{2}(\hat{j}+\hat{i}) \)
(3) \( \frac{5}{2}(\hat{j}+\hat{i}) \)
(4) \( \frac{7}{2}(\hat{j}+\hat{i}) \)
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