Given the function: . Write down the equations of the asymptotes of . Draw the graph of . Clearly show all asymptotes and intercepts with the axes. Determine the equation of the axis of symmetry of with .
Find the vertical asymptotes of .
Function by following steps:
step0: Find the vertical asymptotes:
step1: Evaluate the limit:
step2: Evaluate the left-hand and the right-hand limits:
step3: Evaluate the left-hand limit:
step4: Limit does not exist:
step5: is a vertical asymptote
step6: List all vertical asymptotes of the function:
Find the horizontal asymptotes of .
Function by following steps:
step0: Find the horizontal asymptotes:
step1: Evaluate the limits and
step2: Calculate:
step3: The finite values are horizontal asymptotes:
Find the oblique asymptotes of .
Function by following steps:
step0: Find the oblique asymptotes:
step1: Evaluate the limits and
step2: Calculate:
step3: The function has no oblique asymptote:
step4: The function has no oblique asymptote:
Find the y intercept of .
Function by following steps:
step0: Find the y-intercept:
step1: Set =0
step2: Simplify:
Find the x intercept of .
Function by following steps:
step0: Find the -intercept/zero:
step1: Set =0
step2: Swap the sides:
step3: Find the domain:
step4: Move the constant to the right side:
step5: Remove 0:
step6: Rewrite the expression:
step7: Cross multiply:
step8: Simplify the equation:
step9: Evaluate:
step10: Swap the sides:
step11: Move the constant to the right side:
step12: Add the numbers:
step13: Check if the solution is in the defined range:
step14: Find the intersection:
The equations of the asymptotes of the function are as follows:
Vertical asymptote:
Horizontal asymptote:
No oblique asymptotes
The y-intercept is at and the x-intercept is at .
To determine the equation of the axis of symmetry of with , we need to find the x-coordinate of the axis of symmetry. The axis of symmetry of a function is the vertical line that passes through the vertex of the parabola. For the function , the axis of symmetry is the vertical line passing through the point where the function is symmetric. Since the function is a rational function, the axis of symmetry is the vertical line passing through the x-coordinate of the vertical asymptote, which is .
Therefore, the equation of the axis of symmetry of with is .
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Bonus Knowledge
The function has two types of asymptotes. First, the vertical asymptote occurs where the denominator equals zero; in this case, , giving us the vertical asymptote at . The horizontal asymptote can be found by observing the end behavior of the function as approaches infinity. As , approaches 2, so the horizontal asymptote is .
To elucidate this information on a graph, you’d plot the function by noting its key features. The vertical asymptote at appears as an indefinite line where the function does not exist. The horizontal asymptote at flattens out the graph as it approaches it. Intercepts can be found by setting to zero to find the x-intercepts and substituting for the y-intercept. After graphing, ensure all asymptotes and intercepts are labeled distinctly.
For the axis of symmetry, consider that the function is in the form of a rational function. In this case, the axis of symmetry aligns with the reflection over the vertical line between the points approaching the asymptote. Since doesn’t possess symmetry in the traditional sense, the axis that reflects any noticeable symmetry of the curve in relation to its undefined points would likely be found at —but note that this requires some interpretation, as typical axes might not be as straightforward for such functions.