How do you apply the ratio test to determine if #sum_(n=1)^oo 3^n# is convergent to divergent?
The series diverges.
The ratio test states that the series should be convergent if:
So, in our case we have:
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To apply the ratio test to determine if the series is convergent or divergent:
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Compute the ratio of consecutive terms: .
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Take the limit as approaches infinity: .
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Analyze the limit:
- If the limit is less than 1, the series converges.
- If the limit is greater than 1 or does not exist, the series diverges.
Since the limit of is 3, which is greater than 1, the series diverges.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
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