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What Are the Key Differences Between Convergent and Divergent Sequences?

Key Differences Between Convergent and Divergent Sequences

  1. What They Mean:

    • Convergent Sequences: This is when a sequence, which is a list of numbers, gets closer and closer to a specific number called a limit (let's say it's L).

      For example, no matter how small you want the difference between the sequence and the limit (that's what we call epsilon), there will be a point in the sequence after which all numbers are super close to L.

    • Divergent Sequences: This is when a sequence doesn’t get closer to any one specific number as it goes on forever. It can go up, down, or all over the place without settling.

  2. Examples of Each:

    • Convergent: Think about the sequence where each term is an=1na_n = \frac{1}{n}. As n gets bigger, the terms get closer and closer to 00. So, we say this sequence converges to 00.

    • Divergent: Now consider the sequence bn=nb_n = n. As n keeps growing, this sequence keeps getting larger and larger without stopping. So, we call it divergent because it goes off to infinity.

  3. How to Picture Them:

    • Convergent: Imagine a line on a graph that gets closer and closer to a horizontal line (this is the limit).

    • Divergent: Picture a graph that either keeps going higher and higher or swings back and forth without settling down.

In summary, convergent sequences find a limit, while divergent sequences do not!

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What Are the Key Differences Between Convergent and Divergent Sequences?

Key Differences Between Convergent and Divergent Sequences

  1. What They Mean:

    • Convergent Sequences: This is when a sequence, which is a list of numbers, gets closer and closer to a specific number called a limit (let's say it's L).

      For example, no matter how small you want the difference between the sequence and the limit (that's what we call epsilon), there will be a point in the sequence after which all numbers are super close to L.

    • Divergent Sequences: This is when a sequence doesn’t get closer to any one specific number as it goes on forever. It can go up, down, or all over the place without settling.

  2. Examples of Each:

    • Convergent: Think about the sequence where each term is an=1na_n = \frac{1}{n}. As n gets bigger, the terms get closer and closer to 00. So, we say this sequence converges to 00.

    • Divergent: Now consider the sequence bn=nb_n = n. As n keeps growing, this sequence keeps getting larger and larger without stopping. So, we call it divergent because it goes off to infinity.

  3. How to Picture Them:

    • Convergent: Imagine a line on a graph that gets closer and closer to a horizontal line (this is the limit).

    • Divergent: Picture a graph that either keeps going higher and higher or swings back and forth without settling down.

In summary, convergent sequences find a limit, while divergent sequences do not!

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