Mathematics okujabulisayo. isilinganiso

Esifundweni sezibalo, isilinganiso izibalo yezinombolo (noma isilinganiso) - isamba sazo zonke izinombolo kule isethi, ihlukaniswe ngokwesibalo sako. Lona umqondo obanzi kunayo futhi generalized yobukhulu isilinganiso. Njengoba wazi, ukuze uthole inani eliyisilinganiso, kubalulekile ngamafuphi yonke idatha okudingayo ulwahlukanise ngenani imigomo.

Kuyini izibalo obunonya?

Ake sibheke isibonelo.

Isibonelo 1. izinombolo Sikhishwe 6, 7, 11. Kudingeka sithole value abo isilinganiso.

Isinqumo.

Ukuze uqale, thola isamba sazo zonke izinombolo idatha.

6 + 7 + 11 = 24

Manje bahlukanise inani okuholela ngenani imigomo. Njengoba sinalezi imigomo emithathu ngokulandelana, thina wehlukanisa ezintathu.

24: 3 = 8

Ngenxa yalokho, intengo isilinganiso izinombolo 6, 7 no-11 - kuyinto 8. Kungani 8? Ngoba inani 6, 7 no-11 Kuyokwenziwa okufanayo njengoba eights ezintathu. Lokhu kubonakala ngokucacile emfanekisweni.

Inani isilinganiso Kuthi afana "yokululama" izinombolo. Njengoba ubona, kweqembu amapensela babé elifanayo.

Ake sicabangele esinye isibonelo, ukuhlanganisa ilwazi yabo.

Isibonelo 2. izinombolo Given: 3, 7, 5, 13, 20, 23, 39, 23, 40, 23, 14, 12, 56, 23, 29. Kuyadingeka ukuthola value abo isilinganiso.

Isinqumo.

Sithola isamba.

3 + 7 + 5 + 13 + 20 + 23 + 39 + 23 + 40 + 23 + 14 + 12 + 56 + 23 + 29 = 330

Hlukanisa ngenani imigomo (kuleli cala - 15).

330: 15 = 22

Ngenxa yalokho, intengo kusho isethi izinombolo uyalingana 22.

Manje cabanga izinombolo engemihle. Khumbula indlela uwachaze. Ngokwesibonelo, une izinombolo ezimbili zalokhu eyoku-1 kanye -4. Uzothola isamba yabo.

1 + (-4) = 1 - 4 = -3

Ukwazi lokhu, ake sicabangele esinye isibonelo.

Isibonelo 3. Thola kusho inani izinombolo: 3, -7, 5, 13, -2.

Isinqumo.

Thola isamba izinombolo.

3 + (-7) + 5 + 13 + (-2) = 12

Njengoba imigomo 5, bahlukanise inani okuholela nge 5.

12: 5 = 2,4

Ngenxa yalokho, i-arithmetic kusho ukubaluleka 3, -7, 5, 13, -2 kuyinto 2.4.

Namuhla, intuthuko kwezobuchwepheshe kuyinto zibelula ukusebenzisa lokuthola inani eliyisilinganiso izinhlelo computer. Microsoft Office Excel - omunye wabo. Ukucinga inani eliyisilinganiso Excel kuyashesha futhi kulula. Ikakhulukazi, lolu hlelo kwi-Microsoft Office software iphakethe. , Cabanga iziqondiso emfushane kanjani ukuthola izibalo kusho ukubaluleka kanye lolu hlelo.

Ukuze abale nenani isilinganiso uchungechunge lwezinombolo, sebenzisa umsebenzi ISILINGANISO. I-syntax ngoba lo msebenzi:
= Ukwamukela okulingene (argument1, argument2, ... argument255)
lapho argument1, argument2, ... argument255 - kungcono noma izinombolo noma cell izinkomba (amaseli kwakusho amabanga futhi afanayo).

Ukuze ngikwenze kucace kakhudlwana, sizokwenza ukuhlola lwati lolutfolakele.

1. Faka inombolo 11, 12, 13, 14, 15, 16 kuseli C1 - C6.
2. Khetha iseli C7, ngokuchofoza kuyo. Kulesi indawo, sizokubonisa inani eliyisilinganiso.
3. Chofoza le "amafomula" ithebhu.
4. Khetha Imisebenzi Okuningi> oda Statistical ukuze uvule uhlu olwehliswayo.
5. Khetha ISILINGANISO. Ngemva kwalokhu ibhokisi lengxoxo kufanele uvule.
6. Khetha bese uhudula ukuze kuseli C1-C6, ucacise ububanzi ebhokisini lengxoxo.
7. Qinisekisa isenzo sakho ngokucindezela "KULUNGILE".
8. Uma wenza konke ngendlela efanele, i-C7 cell, kufanele ubone impendulo - 13.7. Ngokuchofoza C7 cell umsebenzi (= Ukwamukela okulingene (C1: C6)) izoboniswa bar ifomula.

elula kakhulu ukusebenzisa lo msebenzi ukuze kwamalikhodi invoice noma uma wena nje kudingeka uthole inani isilinganiso uhide kakhulu izinombolo. Ngakho-ke, ngokuvamile sisetshenziswa amahhovisi kanye nezinkampani ezinkulu. Lokhu kukuvumela ukuba alondoloze oda amarekhodi, futhi kwenza kube nokwenzeka ukuba uthole ngokushesha yini (isibonelo, iholo elivamile ngenyanga). Futhi ngosizo i-Excel, ungathola value isilinganiso umsebenzi.