Find the nth term of the geometric sequence with first term -2 and common ratio 1/3.

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- Jun 18th 2010, 08:18 AMkenzie103109find the nth term
Find the nth term of the geometric sequence with first term -2 and common ratio 1/3.

- Jun 18th 2010, 08:28 AMTheCoffeeMachine
What's the n-th term of a geometric sequence given by?

- Jun 18th 2010, 09:07 AMhmmmm
well if it is a geometric series with common ratio 1/3 then to obtain the next term from the one you have you multiply by 1/3 so if your first term is -2 you multiply this by 1/3 to get the next term and so on so the n-th term is equal to the first term ( -2) multiplied by 1/3 n times which equal (1/3)^n

- Jun 18th 2010, 09:12 AMmasters
Use your textbook to find the general formula and insert your given values.

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