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Let it be known that$\newline$$$\lim _{x \rightarrow 1} f(x)=+\infty, \lim _{x \rightarrow 1} g(x)=-\infty, \lim _{x \rightarrow 1} v(x)=0 \text {, }$$$\newline$Find the values of the following limits:$\newline$$3$) $\lim _{x \rightarrow 1}(g(x)+v(x))$;$\newline$$4$) $\lim _{x \rightarrow 1} \frac{1}{g(x)}$;$\newline$$5$) $\lim _{x \rightarrow 1} \frac{v(x)}{f(x)}$;