How to write the sum in sigma notation given a geometric sequence

How to write the sum in sigma notation given a geometric sequence

Assessment

Interactive Video

Mathematics

11th Grade - University

Hard

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The video tutorial explains how to write sum notation for a sequence, starting with identifying the first term and the common ratio. It guides through the process of finding the last term and solving for the number of terms (N) using logarithmic properties. The tutorial concludes with a demonstration of solving the sequence using both logarithmic and one-to-one properties.

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5 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the first term (a1) in the sequence discussed?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

How do you find the common ratio (r) in the sequence?

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the formula for the nth term of the sequence?

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

How do you determine the last term of the sequence if the last value is known?

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

What method can be used to solve for n when given the last term?

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