Krom Trachtenberg
Paperback
Publisher: Independently Published
Published: Mar 18 2026
Pages: 296
Weight: 0.88
Height: 0.62 Width: 6.00 Depth: 9.00
Language: Spanish
Beyond Trachtenberg (angla versio, 2022)
Operación Trachtenberg (hispana versio, 2021) Ĉi tiu estas memhelpilo por tiuj, kiuj iam en sia vivo perdis la memfidon; por tiuj, kiuj kredas sin nekapablaj solvi ajnan operacion sen kalkulilo; resume, por tiuj, kiuj ne fidas sian propran cerbon. La libro esploras netradiciajn manierojn kalkuli, inspiritajn de la scio de la ruso Jakow Trachtenberg, kiu, kiel malliberulo en nazia koncentrejo, sukcesis konservi sian prudenton elpensante kiel operacii per nombroj nur per sia menso. La libro enhavas multon da utilaj informoj rilataj al kalkulado: ekde lertaĵoj por multobligi per la unuaj naturaj nombroj sen bezono de kalkulilo, ĝis metodoj por potencigi nombron per alia aŭ por permane kalkuli la n-an radikon de nombro aŭ ĝian logaritmon; pasante tra nekutimaj kaj scivolemaj manieroj multobligi kaj dividi, la detekto de eraroj en la operacioj, la faktorigo de la unuaj mil nombroj (emfazante inter ili tiujn, kiuj estas primoj), la simpligo de frakcioj, reguloj por determini la signifajn ciferojn de nombro kaj ĝian rondigon, kaj mallonga rigardo al la metodo ABN, kiu kompletigas la tradician edukadon.
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