QUESTION IMAGE
Question
- for the function g graphed in the accompanying figure, find (a) $limlimits_{x \to 0^-} g(x)$ (b) $limlimits_{x \to 0^+} g(x)$ (c) $limlimits_{x \to 0} g(x)$ (d) $g(0)$ (e) $limlimits_{x \to -\infty} g(x)$ (f) $limlimits_{x \to +\infty} g(x)$. figure ex-11
Part (a)
Step1: Analyze left - hand limit as \(x
ightarrow0^{-}\)
To find \(\lim_{x
ightarrow0^{-}}G(x)\), we look at the behavior of the function \(G(x)\) as \(x\) approaches \(0\) from the left (values of \(x\) less than \(0\) getting closer to \(0\)). From the graph, as \(x\) approaches \(0\) from the left, the function values approach \(2\).
\(\lim_{x
ightarrow0^{-}}G(x) = 2\)
Part (b)
Step1: Analyze right - hand limit as \(x
ightarrow0^{+}\)
To find \(\lim_{x
ightarrow0^{+}}G(x)\), we look at the behavior of the function \(G(x)\) as \(x\) approaches \(0\) from the right (values of \(x\) greater than \(0\) getting closer to \(0\)). From the graph, as \(x\) approaches \(0\) from the right, the function values approach \(2\).
\(\lim_{x
ightarrow0^{+}}G(x)=2\)
Part (c)
Step1: Recall the definition of two - sided limit
The two - sided limit \(\lim_{x
ightarrow a}f(x)\) exists if and only if \(\lim_{x
ightarrow a^{-}}f(x)=\lim_{x
ightarrow a^{+}}f(x)\). We know from part (a) that \(\lim_{x
ightarrow0^{-}}G(x) = 2\) and from part (b) that \(\lim_{x
ightarrow0^{+}}G(x)=2\). Since the left - hand limit and the right - hand limit are equal, \(\lim_{x
ightarrow0}G(x) = 2\)
Part (d)
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Step1: Analyze end - behavior as \(x
ightarrow+\infty\)
To find \(\lim_{x
ightarrow+\infty}G(x)\), we look at the behavior of the function as \(x\) becomes very large in the positive direction. Since the function \(G(x)\) is periodic (it repeats its wave - like pattern), as \(x
ightarrow+\infty\), the function does not approach a single finite value, it oscillates between its minimum and maximum values. So \(\lim_{x
ightarrow+\infty}G(x)\) does not exist (oscillates).
Final Answers:
(a) \(\boldsymbol{\lim_{x
ightarrow0^{-}}G(x)=2}\)
(b) \(\boldsymbol{\lim_{x
ightarrow0^{+}}G(x)=2}\)
(c) \(\boldsymbol{\lim_{x
ightarrow0}G(x)=2}\)
(d) \(\boldsymbol{G(0)}\) is undefined (or there is a discontinuity, if we assume the open circle means the function does not take the value at \(x = 0\); if there was a closed circle, it would be \(2\), but the open circle indicates otherwise)
(e) \(\boldsymbol{\lim_{x
ightarrow-\infty}G(x)}\) does not exist (oscillates)
(f) \(\boldsymbol{\lim_{x
ightarrow+\infty}G(x)}\) does not exist (oscillates)