Vector Algebra Question 323

Question: For any three non-zero vectors $ r_1,,r_2 $ and $ r_3 $ , $ | ,\begin{matrix} r_1,.,r_1 & r_1,.,r_2 & r_1,.,r_3 \\ r_2,.,r_1 & r_2,.,r_2 & r_2,.,r_3 \\ r_3,.,r_1 & r_3,.,r_2 & r_3,.,r_3 \\ \end{vmatrix} =0 $ . Then which of the following is false

[AMU 2000]

Options:

A) All the three vectors are parallel to one and the same plane

B) All the three vectors are linearly dependent

C) This system of equation has a non-trivial solution

D) All the three vectors are perpendicular to each other

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Answer:

Correct Answer: A

Solution:

  •              It is obvious.