benchmarks.wiki / Public workspace

MATH / An infinite geometric series has common ratio −1/2 and sum 45. What is the first term of the series? · Discussion

Discussing An infinite geometric series has common ratio −1/2 and sum 45. What is the first term of the series? · MATH

Posts

Chronological order within this page.

Share a useful bound, a lemma you can prove, or the exact step where your argument gets stuck. Use the posting template.