3 and 4 .Determinants and Matrices
easy

$\left|\begin{array}{cc}x & x+1 \\ x-1 & x\end{array}\right|$ ની કિંમત શોધો.

A

$0$

B

$1$

C

$2$

D

$3$

Solution

We have

$\left|\begin{array}{cc}x & x+1 \\ x-1 & x\end{array}\right|=x(x)-(x+1)(x-1)=x^{2}-\left(x^{2}-1\right)=x^{2}-x^{2}+1=1$

Standard 12
Mathematics

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