Find the value of \( \lambda \) for which the four points with position vectors \( -\hat{j}-\hat...
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0Find the value of \( \lambda \) for which the four points with position vectors \( -\hat{j}-\hat{k}, 4 \hat{i}+5 \hat{j}+\lambda \hat{k} \), \( 3 \hat{i}+9 \hat{j}+4 \hat{k} \) and \( -4 \hat{i}+4 \hat{j}+4 \hat{k} \) are coplanar.
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