Rịba ama amaokwu dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka akụkụ ahụ: 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. Ajụjụ: kedu ọrụ abụọ ndị sitere na ọrụ na nsogbu Basel?
ọrụ Dirichlet eta na ọrụ Riemann zeta