Determinants Matrices Question 23

Question: The value of the determinant $ \begin{vmatrix} kb & {k^{^{2}}}+a^{2} & 1 \\ kb & k^{2}+b^{2} & 1 \\ kc & k^{2}+c^{2} & 1 \\ \end{vmatrix} $ is

Options:

A) $ k(a+b)(b+c)(c+a) $

B) $ kabc(a^{2}+b^{2}+c^{2}) $

C) $ k(a-b)(b-c)(c-a) $

D) $ k(a+b-c)(b+c-a)(c+a-b) $

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Answer:

Correct Answer: C

Solution:

  • [c] we have, $ =k(a-b)(b-c)(c-a) $