Function Expression :
\[f(x)=x-1+\frac{4}{x+1} \]Domain
\[\left]-\infty, -1\right[ \cup \left]-1, \infty\right[ \]Limits
\[\lim_{x \rightarrow-\infty}f(x) = -\infty \]\[\lim_{x \overset{<}{\rightarrow-1} }f(x) = -\infty \]
\[\lim_{x \overset{>}{\rightarrow-1} }f(x) = +\infty \]
\[\lim_{x \rightarrow+\infty}f(x) = +\infty \]
\[ \]
Derivate
\[f^{\,\prime}(x)=1 - \frac{4}{\left(x + 1\right)^{2}} \]\[f^{\,\prime}(x)=1 - \frac{4}{\left(x + 1\right)^{2}} \]
\[f^{\,\prime}(x)=\frac{\left(x + 1\right)^{2} - 4}{\left(x + 1\right)^{2}} \]
Integral
\[F(x) = \frac{x^{2}}{2} - x + 4 \log{\left(x + 1 \right)} \]Sign Table
Variation Table
Plot
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