/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 45 Find the limit. $$ \lim _{x \r... [FREE SOLUTION] | 91Ó°ÊÓ

91Ó°ÊÓ

Find the limit. $$ \lim _{x \rightarrow e^{+}}(e / \pi)^{1 /(x-e)} $$

Short Answer

Expert verified
The limit is 0 as \( x \to e^{+} \).

Step by step solution

01

Examine the Expression

The expression given in the limit is \( (e / \pi)^{1/(x-e)} \). As \( x \to e^{+} \), the denominator \( 1/(x-e) \) approaches infinity. We need to determine the behavior of the whole expression as \( x \) approaches \( e \) from the right.
02

Analyze the Base Expression

Note the base \( (e/\pi) \) of the expression is a constant fraction where \( e \approx 2.718 \) and \( \pi \approx 3.141 \), resulting in \( e/\pi \lt 1 \). This fraction less than 1 raised to a large exponent approaches zero.
03

Determine Limit Behavior

Since any constant base less than 1 raised to the power of positive infinity approaches 0, it follows that \( (e/\pi)^{1/(x-e)} \) approaches 0 as \( x \to e^{+} \). Thus, the limit of the expression is \( 0 \).

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Understanding Limit Behavior
In calculus, limits describe how a function behaves as its input approaches a certain value. Understanding the behavior of expressions involves examining what happens to the function around a specific point. This is essential for grasping the overall tendency, stability, or variation of the function under small or large changes in the input variables.

For the provided example, we consider the expression \( \left( \frac{e}{\pi} \right)^{1/(x-e)} \). As \( x \) advances towards \( e \) from the positive direction, the expression inside the power, \( 1/(x-e) \), increases indefinitely. Recognizing this, a critical step is to evaluate how the function behaves with regard to this trend.

  • The key focus is on how the numerical value oscillates or stabilizes as we modify the x-value.
  • When the denominator becomes extremely large, it deeply influences the outcome of the expression.
This thorough examination lets us infer that the function essentially diminishes to zero as its exponent heads towards infinity.
The Concept of Infinite Limits
An infinite limit in calculus refers to a situation where a function's value grows larger beyond any bounds as the input nears a specified point. This sort of analysis gives insight into the nature of asymptotes and unbounded behavior of functions within prescribed domains.

When looking at \( 1/(x-e) \) as \( x \) approaches \( e^+ \), the divisor shrinks towards zero, thereby causing the reciprocal to explode to infinity. With the power tending towards infinity, the function assumes an infinite form, implying an exponential growth for powers of base values under certain circumstances.

  • Infinite limits probe how functions explore endless magnitude.
  • They determine whether functions possess breaks, continuous peaks, or non-existence origins.
In the case where \( \left( \frac{e}{\pi} \right) \) is raised indefinitely, the resultant impacts are influenced profoundly, thereby validating the core nature of infinite limits.
Insights into Exponential Functions
Exponential functions are mathematical expressions where variables appear as exponents. They showcase rapid escalation or decay, rendering them highly instrumental in various practical applications.

In our analysis, \( \left( \frac{e}{\pi} \right)^{1/(x-e)} \) expresses such a model with \( \frac{e}{\pi} \) acting as the base.Understanding how exponential functions fluctuate when the base is a fraction less than one is crucial. Generally, when raising such bases to higher powers, the magnitude diminishes approaching zero.

  • Exponential forms address dynamic transformation, scaling small or sharply increasing swiftly.
  • Such functions are keystones in natural processes with diminishing influences.
In analyzing the function, raising a fraction to an inflating power indicates eventual decline, providing a clear boundary toward detecting zero as the terminal limit value.

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Most popular questions from this chapter

In each of Exercises \(93-96,\) plot the given functions \(g, f,\) and \(h\) in a common viewing rectangle that illustrates \(f\) being pinched at the point \(c\). Determine \(\lim _{x \rightarrow c} f(x)\). $$ \begin{array}{l} g(x)=-2|x|, f(x)=\cos (x-1 / x)-\cos (x+1 / x) \\\ h(x)=2|x| \quad c=0 \end{array} $$

Plot \(y=\ln (x)\) for \(1 / 2 \leq x \leq 3\). Let \(P(c)\) denote the point \((c, \ln (c))\) on the graph. The purpose of this exercise is to graphically explore the relationship between \(1 /\) \(\mathrm{c}\) and the slope of the tangent line at \(P(c) .\) For \(c=1,3 / 2,\) and \(2,\) calculate the slope \(m(c)\) of the secant line that passes through the pair of points \(P(c-0.001)\) and \(P(c+0.001) .\) For each \(c,\) calculate \(|1 / c-m(c)|\) to see that \(m(c)\) is a good approximation of \(1 / \mathrm{c}\). Add the three secant lines to your viewing window. For each of \(c=1\), \(3 / 2,\) and \(2,\) add to the viewing window the line through \(P(c)\) with slope \(1 / \mathrm{c}\). As we will see in Chapter \(3,\) these are the tanget lines at \(P(1), P(3 / 2),\) and \(P(2) .\) It is likely that they cannot be distinguished from the secant lines in your plot.

Prove that, if \(f\) is a continuous function on \([0,1],\) and \(f(0)=f(1)\) then there is a value \(c\) in (0,1) such that \(f(c)=f(c+1 / 2) .\) This is a special case of the Horizontal Chord Theorem. (Hint: Apply the Intermediate Value Theorem to the function \(g\) defined on \([0,1 / 2]\) by \(g(x)=\) \(f(x+1 / 2)-f(x) .)\)

In Exercises \(67-73,\) use algebraic manipulation (as in Example 5 ) to evaluate the limit. $$ \lim _{t \rightarrow 0}\left(\frac{\sqrt{3+t}-\sqrt{3}}{t}\right) $$

Graph the given function \(f\) over an interval centered about the given point \(c,\) and determine if \(f\) has a continuous extension at \(c\). $$ f(x)=\left(x^{4}-6 x^{3}+7 x^{2}+4 x-4\right) /(x-2), c=2 $$

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