find-the-sum-of-i-1-e-2-i-t-

Question Number 206976 by mokys last updated on 02/May/24

$$\:{find}\:{the}\:{sum}\:{of}\::\:\underset{{i}=\mathrm{1}} {\overset{\infty} {\sum}}\:{e}^{−\mathrm{2}\lambda_{{i}} \:{t}} \\ $$

Commented by mr W last updated on 02/May/24

$${what}\:{are}\:{the}\:\lambda_{{i}} \:? \\ $$