Rejea kifungu hapa chini na kisha jibu swali baadaye katika lugha ile ile kama kifungu: Passage: The series 1 − 2 + 3 − 4 +... is closely related to Grandi's series 1 − 1 + 1 − 1 +.... Euler treated these two as special cases of 1 − 2n + 3n − 4n +... for arbitrary n, a line of research extending his work on the Basel problem and leading towards the functional equations of what are now known as the Dirichlet eta function and the Riemann zeta function. Swali: ni nini kazi mbili kwamba alikuja kutoka kazi juu ya Basel tatizo?
kazi ya Dirichlet eta na kazi ya Riemann zeta