Cube umehluko kanye nomehluko Cubes: imithetho amafomula ukubuyabuyelela emelela

Formula noma ezifingqiwe ukubuyabuyelela umthetho lisetshenziswe izibalo, ukuba ngqo - e-algebra, ukuze sisheshe ukubala inqubo izinkulumo ezinkulu Aljibhra. Ngokwabo etholakala ezikhona imithetho amafomula Aljibhra zokuphindaphinda ka Polynomials eziningana.

Ukusebenzisa lezi amafomula isixazululo ngokwanele op yezinkinga ezihlukahlukene zezibalo futhi kusize ukusebenzisa yokuncishiswa izinkulumo. Imithetho zikuvumela ukwenza manipulations algebraic ezinye zokukhwabanisa ngamazwi, ungakwazi ukulandela ukuthola ohlangothini lwesobunxele Inkulumo ohlangothini olusesandleni sokunene, noma ukuguqula ohlangothini olusesandleni sokunene (ukuze uthole Inkulumo ohlangothini lwesobunxele setshwayo).

Kuyinto elula ukwazi ifomula eyayisetshenziselwa ukunciphisa ukubuyabuyelela, kumemori, njengoba ngokuvamile bajwayele ekuxazululeni izinkinga kanye zibalo. Ngezansi amafomula eziyisisekelo kulolu hla, futhi igama lakhe.

Isikwele yesamba

Ukuze abale esigcawini isamba ezidingekayo ukuze uthole isamba skwele eThemini, kabili umkhiqizo eThemini owesibili isikwele yesibili. Kulesi umthetho ifomu Inkulumo kulotshiwe kanje: (a c +) ² = a² + s² + 2AS.

umehluko yisikwele

Ukuze ukubala umehluko lesikwele, kubalulekile ukubala isamba skwele inombolo yokuqala, umsebenzi wokuqala kabili lesibili (ezithathwe nge uphawu elandulelayo) esigcawini inombolo yesibili. Kulesi umthetho ifomu inkulumo ngendlela elandelayo: (a - c) ² = a² - 2AS + s².

umehluko izikwele

Formula umehluko wezinombolo ezimbili, lesikwele, lilingana umkhiqizo yesamba lezi zinombolo ku umehluko yabo. Kulesi umthetho ifomu inkulumo ngendlela elandelayo: a² - s² = (a c +) · (a - c).

cube lemali

Ukuze abale isamba ezimbili imigomo cube, udinga ukubala isamba elithi lokuqala cube, isikwele kathathu umkhiqizo eThemini kanye nesesibili kathathu umkhiqizo eThemini futhi isikwele wesibili kanye cube kwethemu yesibili. Kulesi umthetho ifomu inkulumo ngendlela elandelayo: (a c +) ³ = a³ + 3a²s 3as² s³ +.

Isamba cubes

Ngokusho ifomula, isamba cubes ilingana umkhiqizo yesamba kwalemibandela ingxenye yabo umehluko lesikwele. Kulesi umthetho ifomu inkulumo ngendlela elandelayo: a³ s³ + = (a c +) + (a² - Al + s²).

Isibonelo. Kuyadingeka ukuba abale umthamo sibalo, kwakhiwa ngokungeza cubes ezimbili okuyinto. It is kuphela ukubaluleka ezinhlangothini zazo ezaziwayo.

Uma inani le-amaqembu amancane, khona-ke ukwenza izibalo nje.

Uma ubude izinhlangothi obonakaliswe izinombolo besiyoba sikhulu, kulesi simo-ke kulula ukusebenzisa ifomula "Isamba cubes", okuzokwenza kakhulu lula izibalo.

umehluko phakathi cube

Inkulumo ethi ngoba umehluko cubic kuyinto: isamba elithi lokuqala degree lwesithathu, kathathu isikwele komkhiqizo engakhi eThemini neyesibili, kathathu umkhiqizo ethemini yokuqala esigcawini negative wesibili ilungu cube yesibili. Ku-zezibalo Inkulumo cube umehluko simiswe ngalendlela lelandzelako: (a - c) ³ = a³ - 3a²s 3as² + - s³.

Umahluko cubes

cubes umehluko ifomula lihlukile isamba cubes yisibonakaliso eyodwa kuphela. Ngakho, cubes umehluko - ifomula, ilingana umehluko phakathi izinombolo idatha ku ingxenye yabo yisikwele isamba. Ku-zezibalo Inkulumo cubes umehluko simi ngale ndlela: ³ - ³ = (Al) (a ² + Al + ^2).

Isibonelo. Kuyadingeka ukuba abale ivolumu sibalo ukuthi uhlala emva deducting kusukela inani okwesibhakabhaka cube volumetric sibalo umbala ophuzi, okuyilona elisebenzayo futhi cube. It is kuphela ukubaluleka ingxenye cube ezincane nezinkulu ezaziwayo.

Uma ukubaluleka amaqembu amancane, ukubala ulula. Uma ubude eceleni eshiwo ku izinombolo abalulekile, kubalulekile ukuba sisebenzise ifomula, eyayinesihloko esithi "Umehluko cubes" (noma "Cube umehluko") umphathi ukuthi kakhulu lula ukubala.