# An arithmetic sequence has as its first three terms #a_1=a, a_2=2a, a_3=a^2#. What are the three terms?

See below:

The formula for an arithmetic sequence is:

and so on - we end up listing the set of positive even numbers with this sequence.

Let's plug what we know into our general formula for the first two terms:

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The three terms of the arithmetic sequence are ( a ), ( 2a ), and ( a^2 ).

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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.

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