A convergence test also called "de Morgan's and Bertrand's test." If the ratio of terms of a series can be written in the form
then the series converges if and diverges if , where is the lower limit and is the upper limit.
A convergence test also called "de Morgan's and Bertrand's test." If the ratio of terms of a series can be written in the form
then the series converges if and diverges if , where is the lower limit and is the upper limit.
Weisstein, Eric W. "Bertrand's Test." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/BertrandsTest.html