Ukuqhubekela phambili kwejiyomethri kuwuhlobo lokuqhubeka lapho ithemu ngayinye ingumkhiqizo wangaphambilini ngokuqhubekayo okubizwa ngokuthi isilinganiso. Isamba semigomo yokuqhubeka kwejometri ibizwa ngokuthi uchungechunge lwejometri.
Uma ukuqhubekela phambili kwejometri kunetemu yokuqala a kanye nesilinganiso esingu-r, ukulandelana kwayo kwe-nth kunikezwa ngu:
a, ar, ar2, ar3, … , arn−1
Isamba semigomo engu-n yokuqala yokuqhubeka kwejometri sinikezwa ifomula:
S n = a ( 1 − rn) 1 − r
Ukuqhubekela phambili kweJomethri: imiqondo nokuzivocavoca
https://www.youtube.com/watch?v=N7HwsHYzeW4
AMAFOMU OKUQHUBEKA KWE-GEOMETRIC
https://www.youtube.com/watch?v=Reed2twz_ho
Kuyini ukuqhubeka komqondo?
Ukuqhubekela phambili komqondo kuyindlela yokufundisa ebandakanya ukusebenzisa imisebenzi nemisebenzi ukusiza abafundi baqonde umqondo. Esikhundleni sokumane bafunde amaqiniso noma idatha, abafundi basebenza ngokuzikhandla ukuze bazitholele umqondo. Lokhu kungase kuhlanganise ukusetshenziswa kokuhlolwa, izivivinyo zokuxazulula izinkinga, noma ngisho nemidlalo.
Kuyini ukuqhubeka kwejometri kanye namafomula akho?
Ku-geometry, ukuqhubekela phambili kwejometri uchungechunge lwe-arithmetic lapho igama elijwayelekile litholwa ngokuphindaphinda ithemu yangaphambilini ngokungaguquki okubizwa ngokuthi isilinganiso. Isibonelo, uchungechunge 3, 6, 12, 24 inqubekelaphambili yejometri enesilinganiso sika-2. Kubizwa kanjalo ngoba ithemu ngayinye ochungechungeni isilinganiso esiphindwe ngethemu edlule.
Isamba samagama angu-n wokuqala wokuqhubeka kwejometri sibalwa kusetshenziswa ifomula elandelayo:
S n = a 1 (rn – 1) / (r – 1)
Kule fomula, u-a1 uyitemu yokuqala yochungechunge futhi u-r uyisilinganiso.
Kuyini ukulandelana kwejometri nezibonelo?
Ukulandelana kwejiyomethri kuwukulandelana lapho ithemu ngayinye ngemva kwelokuqala itholakala ngokuphindaphinda eyangaphambili ngenombolo engashintshi, engeyona enguziro ebizwa ngokuthi isilinganiso esivamile. Isibonelo, ukulandelana 2, 6, 18, 54, … kuwukulandelana kwejiyomethri ngoba ithemu ngayinye ngemva kwelokuqala iphinda izikhathi ezi-3 kunangaphambili.
Kuyini ukuqhubeka kwejometri?
Ukuqhubeka kwejiyomethri ukulandelana kwezinombolo lapho ithemu ngayinye ingumkhiqizo wethemu yangaphambilini izikhathi ezingaguquki ezibizwa ngokuthi isilinganiso. Isilinganiso singaba yinoma iyiphi inombolo, iphozithivu noma inegethivu, ngaphandle kweziro.
Yiziphi izici zokuqhubeka kwejometri?
Ukuqhubekela phambili kwejiyomethri ukulandelana lapho ithemu ngayinye ngokulandelana iwumkhiqizo wesilinganiso esiphindaphindwe ngethemu yangaphambilini.
Kusetshenziswa nini ukuqhubeka kwejiyomethri?
Ukuqhubekela phambili kwejiyomethri kusetshenziswa uma ufuna ukwakha ukulandelana kwezinombolo lapho ithemu ngayinye ilingana nedlule eliphindwe ngokungaguquki okufanayo.
Ibalwa kanjani ukuqhubeka kwejometri?
Ukuze ubale ukuqhubeka kwejometri, udinga ithemu yokuqala yokuqhubeka kanye nesilinganiso. Ithemu yokuqala inombolo etholakala ekuqaleni kwenqubekelaphambili, kuyilapho isilinganiso siyinombolo esetshenziselwa ukuphindaphinda ithemu yangaphambilini ukuze ifike ethemini elandelayo.
