3.1.复数项级数 3/54 831复数项级数 3.11复数项级数 设有复数项无穷级数 Wk=wit wet.twk+ k uk iv 式(31-1)的前n项之和为 uk k=1 k=1 从而 li Wk= lim>uk +i lim →oo k=1 ● First●Prev●Next●Last● Go Back● Full screen●cose●Quit• First • Prev • Next • Last • Go Back • Full Screen • Close • Quit §3.1. Eê‘?ê 3/54 §3.1 Eê‘?ê 3.1.1 Eê‘?ê kE. ê. ‘. Ã. ¡. ?. ê. X ∞ k=1 wk = w1 + w2 + · · · + wk + · · · , (3.1-1) wk = uk + ivk. ª(3.1-1)c n ‘ƒÚ X n k=1 wk = X n k=1 uk + i X n k=1 vk, l lim n→∞ X n k=1 wk = lim n→∞ X n k=1 uk + i lim n→∞ X n k=1 vk