8. Find the sum of the numbers between 361 and 589 that are divisible by 19. 9. The fourth term of an arithmetic sequence is equal to 1, and the difference 20h and the 14th terms is 54. Determine the sum of the first 10 terms. 10. Find the sum of the first 10 terms of the geometric progression -343, 49, -7, ...

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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8. Find the sum of the numbers between 361 and 589 that are divisible by 19.
9. The fourth term of an arithmetic sequence is equal to 1, and the difference 20h and the 14th
terms is 54. Determine the sum of the first 10 terms.
10. Find the sum of the first 10 terms of the geometric progression-343, 49, -7, ..
Transcribed Image Text:8. Find the sum of the numbers between 361 and 589 that are divisible by 19. 9. The fourth term of an arithmetic sequence is equal to 1, and the difference 20h and the 14th terms is 54. Determine the sum of the first 10 terms. 10. Find the sum of the first 10 terms of the geometric progression-343, 49, -7, ..
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