3 and 4 .Determinants and Matrices
easy

સમીકરણ $\left| {\,\begin{array}{*{20}{c}}{a + x}&{a - x}&{a - x}\\{a - x}&{a + x}&{a - x}\\{a - x}&{a - x}&{a + x}\end{array}\,} \right| = 0$ નો ઉકેલ મેળવો.

A

$x = 0,x = 4a$

B

$x = 0,x = a$

C

$x = 0,x = 2a$

D

$x = 0,x = 3a$

Solution

(d) Trick: Putting $x = 0$ and $x = 3a,$ the value of determinant becomes zero.

Standard 12
Mathematics

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