1.

Find the domain and range function `f(x) =(x^(2)-3x+2)/(x^(2)-4x+3)`.

Answer» `y=f(x)=((x-1)(x-2))/((x-3)(x-1))=(x-2)/(x-3), x ne 1,3`
Domain of function `=R-{1,3}`
Now `yx-3y=x-2`
` :. x= (3y-2)/(y-1)`
Clearly `y ne 1`.
Also, when ` x=1, y=1//2`
Therefore, range of function is ` R-{(1)/(2),1}`


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