Infinite Limits — Question 4

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Question 4

Evaluate the following limit: limx→1+5x−1\lim_{x \to 1^+} \frac{5}{x - 1}

Original worksheet page 1: question and worked solution for 2-6-004
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Question 4 - Solution

We are given: limx→1+5x−1\lim_{x \to 1^+} \frac{5}{x - 1}

Step 1: Understand the behavior of the denominator

As x→1+x \to 1^+, we are approaching 1 from the right. This means x−1x - 1 is a small positive number.

Step 2: Behavior of the whole expression

5x−1→5small positive number→+∞\frac{5}{x - 1} \to \frac{5}{\text{small positive number}} \to +\infty

Conclusion: limx→1+5x−1=∞\boxed{\lim_{x \to 1^+} \frac{5}{x - 1} = \infty}

Original worksheet page 2: question and worked solution for 2-6-004

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