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Q4-Sketch a graph of a function that contains the following. Label your axis. \( g(2)=1, \quad g(5)=-1, \quad \lim _{x \rightarrow 4} g(x)=-\infty \) \( \lim _{x \rightarrow 7^{-}} g(x)=\infty, \quad \lim _{x \rightarrow 7^{+}} g(x)=-\infty \)

Ask by Conner Hills. in the United States
Mar 10,2025

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Answer

To sketch the graph of function \( g(x) \): 1. **Draw Axes**: Label the x-axis and y-axis. 2. **Plot Points**: Mark \( (2,1) \) and \( (5,-1) \). 3. **Vertical Asymptotes**: Draw dashed lines at \( x=4 \) and \( x=7 \). 4. **Behavior Near Asymptotes**: - At \( x=4 \), the graph approaches \(-\infty\) from both sides. - At \( x=7 \), the graph approaches \( +\infty \) from the left and \(-\infty\) from the right. 5. **Connect Points**: Draw the graph passing through the plotted points and approaching the asymptotes as described. 6. **Label**: Mark the asymptotes and points on the graph. The graph will pass through \( (2,1) \) and \( (5,-1) \), have vertical asymptotes at \( x=4 \) and \( x=7 \), and show the specified limits as \( x \) approaches these points.

Solution

1. Draw and label the coordinate axes. 2. Plot the given points: mark the point \( (2,1) \) and the point \( (5,-1) \). 3. Draw vertical dashed lines at \( x=4 \) and \( x=7 \) to indicate vertical asymptotes. 4. Near the vertical line \( x=4 \) the function behaves so that \[ \lim_{x\rightarrow4} g(x)=-\infty. \] This means that as \( x \) approaches 4 from both the left and the right, the graph dives downward without bound. Sketch the graph so that both sides near \( x=4 \) head steeply downward. 5. At \( x=7 \) the behavior is one‐sided: - As \( x\rightarrow7^-\) (from the left), \[ \lim_{x\rightarrow7^-} g(x)=\infty, \] so the graph rises steeply upward. - As \( x\rightarrow7^+\) (from the right), \[ \lim_{x\rightarrow7^+} g(x)=-\infty, \] so the graph falls steeply downward. Draw the graph accordingly on both sides of \( x=7 \). 6. Connect the plotted points and the asymptotic regions by ensuring the following: - For \( x<4 \), have the graph travel through \( (2,1) \) and approach \(-\infty\) as \( x\rightarrow4^-\). - For \( 47 \), start from \(-\infty\) (as \( x\rightarrow7^+\)) and allow the graph to continue with a reasonable end‐behavior (for example, possibly leveling off to a horizontal asymptote or continuing on, though no limit is specified at infinity). 7. Label the asymptotes and the points on your graph. The end result is a graph that passes through \( (2,1) \) and \( (5,-1) \), has a vertical asymptote at \( x=4 \) where the function falls to \(-\infty\) on both sides, and has a “split” vertical asymptote at \( x=7 \) with the left side going toward \( +\infty \) and the right side toward \( -\infty \).

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To sketch the graph based on the given conditions, begin by drawing your x and y axes, labeling them accordingly. Plot the point at (2, 1) and the point at (5, -1). Next, as \(x\) approaches 4, the graph should plunge down towards \(-\infty\), indicating a vertical asymptote at \(x = 4\). Now for \(x = 7\), show two things: as \(x\) approaches 7 from the left (\(7^-\)), the function shoots up toward \(+\infty\) and as \(x\) approaches from the right (\(7^+\)), it dives down toward \(-\infty\). This creates a vertical asymptote at \(x = 7\). Connect these points smoothly, ensuring your graph reflects these behaviors for a clear, engaging visual of \(g(x)\). To spice up your understanding of graphing, imagine this function as a roller coaster: the steep drops represent the asymptotes, while the peaks at \(g(2) = 1\) and \(g(5) = -1\) are the exhilarating highs and lows of the ride! Each part of the graph tells a story of action, with the function dancing between valleys and mountains—just like a thrilling adventure! When sketching such functions, common mistakes include overlooking vertical asymptotes or not plotting key points accurately. Always check the limits to give your graph the right behavior at those critical points! Practice makes perfect, so don't hesitate to experiment with different shapes until you find one that fits the criteria seamlessly.

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