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3 and 4 .Determinants and Matrices
easy
સાબિત કરો કે $\left|\begin{array}{ccc}a & b & c \\ a+2 x & b+2 y & c+2 z \\ x & y & z\end{array}\right|=0$
Option A
Option B
Option C
Option D
Solution
We have $\left|\begin{array}{ccc}a & b & c \\ a+2 x & b+2 y & c+2 z \\ x & y & z\end{array}\right|=\left|\begin{array}{ccc}a & b & c \\ a & b & c \\ x & y & z\end{array}\right|+\left|\begin{array}{ccc}a & b & c \\ 2 x & 2 y & 2 z \\ x & y & z\end{array}\right|$
$=0+0=0 \quad$
Standard 12
Mathematics