Answer
$$\dfrac{2}{3}$$
Work Step by Step
In order to simplify the given expression, we will use the following rules.
$(a) \lim\limits_{x \to a} \dfrac{p(x)}{q(x)}=\dfrac{\lim\limits_{x \to a} p(x)}{\lim\limits_{x \to a} q(x)} \\ (b) \lim\limits_{x \to a} k(x)=k(a)$ ;
where $a$ is a constant.
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Thus, we have:
$$ \lim\limits_{x \to 1} \dfrac{(x^3-x^2+x-1)}{(x^4-x^3+2x-2)}=\lim\limits_{x \to 1} \dfrac{x^2(x-1)+(x-1)}{x^3(x-1)+2(x-1)} \\=\dfrac{\lim\limits_{x \to 1} (x-1)(x^2+1)}{\lim\limits_{x \to 1} (x-1)(x^3+2)}\\=\dfrac{\lim\limits_{x \to 1} (x^2+1)}{\lim\limits_{x \to 1} (x^3+2)} \\=\dfrac{1+1}{1+2} \\=\dfrac{2}{3}$$
