MHT CET · Maths · Vector Algebra
The number of integral values of \(p\) for which the vector \((\mathrm{p}+1) \hat{i}-3 \hat{\mathrm{j}}+\mathrm{p} \widehat{\mathrm{k}}, \mathrm{p} \hat{i}+(\mathrm{p}+1) \hat{\mathrm{j}}-3 \widehat{\mathrm{k}}\) and \(-3 \hat{i}+\mathrm{p} \hat{\mathrm{j}}+(\mathrm{p}+1) \widehat{\mathrm{k}}\) are linearly dependent vectors, are
- A \(0\)
- B \(1\)
- C \(2\)
- D \(3\)
Answer & Solution
Correct Answer
(B) \(1\)
Step-by-step Solution
Detailed explanation
\( \begin{vmatrix} p+1 & -3 & p \\ p & p+1 & -3 \\ -3 & p & p+1 \end{vmatrix} = 0 \) \( (2p-2) \begin{vmatrix} 1 & -3 & p \\ 1 & p+1 & -3 \\ 1 & p & p+1 \end{vmatrix} = 0 \)
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