Math Problem Statement
1st term of a geometric progression is -2 common ratio is -3 find sum of 1st 10 terms
Solution
To find the sum of the first 10 terms of a geometric progression (GP), we can use the formula for the sum of the first terms of a GP:
where:
- is the sum of the first terms,
- is the first term,
- Given values a1 = -2 r = -3 n = 10
Calculate the sum of the first 10 terms using the formula
S_n = a1 * (1 - r**n) / (1 - r) S_nThe sum of the first 10 terms of the geometric progression is 29,524.
Would you like more details or have any further questions on this topic?
Here are 5 related questions to explore further:
- How does the sum of a geometric progression change if the common ratio is positive?
- What happens to the sum if the common ratio is between -1 and 1?
- Can the sum of an infinite geometric progression ever be finite? If so, under what conditions?
- How do you derive the formula for the sum of a geometric progression?
- How can the sum of a geometric series be calculated if the common ratio is a fraction?
Tip: In geometric progressions, the sign of the common ratio significantly affects
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Math Problem Analysis
Mathematical Concepts
Geometric Progression
Series and Sequences
Formulas
Sum of the first n terms of a GP: S_n = a_1 * (1 - r^n) / (1 - r)
Theorems
Formula for the sum of a geometric progression
Suitable Grade Level
Grades 9-12
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