3 and 4 .Determinants and Matrices
easy

यदि $\left| {\,\begin{array}{*{20}{c}}{a + x}&{a - x}&{a - x}\\{a - x}&{a + x}&{a - x}\\{a - x}&{a - x}&{a + x}\end{array}\,} \right| = 0$ तो  $x$  के मान होंगे

A

$x = 0,x = 4a$

B

$x = 0,x = a$

C

$x = 0,x = 2a$

D

$x = 0,x = 3a$

Solution

ट्रिक : $x = 0$ तथा $x = 3a$ रखने पर सारणिक का मान शून्य हो जाता है।

Standard 12
Mathematics

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