Q.3 Find the inverse of each of the following matrices by using elementary row transformations:122-1

Q.3 Find the inverse of each of the following matrices by using elementary row transformations: $[\begin{matrix} 1 & 2 \\ 2 & - 1 \end{matrix}]$

$f (x) = \{\begin{matrix} \frac{\sin (a + 1) x + \sin x}{x}, f o r x < 0 \\ x, f o r x = 0 \\ \frac{\sqrt{x + b x^{2}} - \sqrt{x}}{b x^{\frac{3}{2}}}, f o r x > 0 \end{matrix}$

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Q.3 Find the inverse of each of the following matrices by using elementary row transformations:122-1

f(x)=sina+1x+sinxx, for x<0x, for x=0x+bx2-xbx32, for x>0

Q.3 Find the inverse of each of the following matrices by using elementary row transformations: $[\begin{matrix} 1 & 2 \\ 2 & - 1 \end{matrix}]$

$f (x) = \{\begin{matrix} \frac{\sin (a + 1) x + \sin x}{x}, f o r x < 0 \\ x, f o r x = 0 \\ \frac{\sqrt{x + b x^{2}} - \sqrt{x}}{b x^{\frac{3}{2}}}, f o r x > 0 \end{matrix}$