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The speed, [tex]\( s \)[/tex], of the current in a certain whirlpool is modeled by [tex]\( s = \frac{300}{d} \)[/tex], where [tex]\( d \)[/tex] is the distance from the center of the whirlpool. Which statement is true?

A. As you move closer to the center of the whirlpool, the speed of the current approaches 0.
B. As you move closer to the center of the whirlpool, the speed of the current approaches 1.
C. As you move closer to the center of the whirlpool, the speed of the current approaches infinity.
D. As you move closer to the center of the whirlpool, the speed of the current approaches 30.


Sagot :

Let's analyze the given function [tex]\( s = \frac{300}{d} \)[/tex].

1. Understanding the function:
- [tex]\( s \)[/tex] represents the speed of the current in the whirlpool.
- [tex]\( d \)[/tex] represents the distance from the center of the whirlpool.

2. Behavior as [tex]\( d \)[/tex] changes:
- As you move closer to the center of the whirlpool, the distance [tex]\( d \)[/tex] approaches 0.

3. Analyzing the limit as [tex]\( d \)[/tex] approaches 0:
- We need to find the limit of the function [tex]\( s \)[/tex] as [tex]\( d \)[/tex] approaches 0.
- Mathematically, we are looking for:
[tex]\[ \lim_{{d \to 0}} \frac{300}{d} \][/tex]

4. Evaluating the limit:
- As [tex]\( d \)[/tex] gets smaller and smaller (approaches 0), the denominator of the fraction becomes very small.
- When we divide a constant number (like 300) by a very small number, the result becomes very large.
- Hence, as [tex]\( d \)[/tex] approaches 0, [tex]\( \frac{300}{d} \)[/tex] increases without bound.

5. Conclusion:
- The speed [tex]\( s \)[/tex] approaches infinity as [tex]\( d \)[/tex] approaches 0.

Therefore, the correct statement is:
- As you move closer to the center of the whirlpool, the speed of the current approaches infinity.
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