In this video I recap on power series and the conditions that it converges, that is, its radius and interval of convergence. A power series has terms of the form: constant * (x - a)n. There are only three possibilities for its convergence: Either it converges only for x = a, or converges for all x, or it converges for |x - a| is less than the radius of convergence R. In the first case, the radius of convergence is considered as R = 0, and the second case it is R = infinity. The interval of convergence has 4 possibilities, since at |x - a| = R, the series can converge or diverge. Thus the interval of convergence is either (a - R, a + R), (a - R, a + R], [a - R, a + R), or [a - R, a + R]. I also graphically show this in the video.
The timestamps of key parts of the video are listed below:
- Question 8: 0:00
- (a) General form of a power series: 0:20
- (b) Radius of convergence of a power series: 1:11
- Summary for the radius of convergence: 6:28
- (c) Interval of convergence of a power series: 7:40
This video was taken from my earlier video listed below:
- Infinite Sequences and Series: Review and True-False Quiz:
- HIVE video notes: @mes/infinite-sequences-and-series-review-and-true-false-quiz
- Video sections playlist: https://www.youtube.com/playlist?list=PLai3U8-WIK0FCqXVJv1r7eJvrvphfkr6L
Related Videos:
Sequences and Series playlist: https://www.youtube.com/playlist?list=PLai3U8-WIK0FjJpwnxwdrOR7L8Ul8VZoZ .
SUBSCRIBE via EMAIL: https://mes.fm/subscribe
DONATE! ʕ •ᴥ•ʔ https://mes.fm/donate
Like, Subscribe, Favorite, and Comment Below!
Follow us on:
MES Truth: https://mes.fm/truth
Official Website: https://MES.fm
Hive: @mes
MORE Links: https://linktr.ee/matheasy
Email me: contact@mes.fm
Free Calculators: https://mes.fm/calculators
BMI Calculator: https://bmicalculator.mes.fm
Grade Calculator: https://gradecalculator.mes.fm
Mortgage Calculator: https://mortgagecalculator.mes.fm
Percentage Calculator: https://percentagecalculator.mes.fm
Free Online Tools: https://mes.fm/tools
iPhone and Android Apps: https://mes.fm/mobile-apps
▶️ DTube