Njira Chitsanzo pa chiphunzitso cha Mwina zolinga mayeso

Masamu - ndi wokongola mosalekeza nkhani. Tsopano ife akamufunsirire tikambirane za kuthetsa mavuto chiphunzitso Mwina, yemwe ali mmodzi wa m'madera a masamu. Ife timati mwakamodzi kuti luso la kuthetsa ntchito zina adzakhala ndi mwayi waukulu pa nthawi ya logwirizana mayeso boma. Mavuto pa mayeso Mwina chiphunzitso lili mbali B omwe, motero, idavoteledwa kuposa Buku mayeso gulu A.

zochitika mwachisawawa ndi Mwina awo

gulu anaphunzira sayansi. Kodi tsoka? Pa iliyonse zinachitikira tipeze chifukwa. Pali ena mayesero ndi chifukwa ena ndi Mwina zana pa zana kapena ziro. Zinthu zimenezi zimatchedwa ovomerezeka ndi zosatheka, motero. Ndife chidwi anthu omwe angagwe kapena ayi, ndiko mwachisawawa. Chifukwa chopeza Mwina chochitika ntchito chilinganizo F = m / N, kumene mamita - ndi mungachite kuti kumatikhutiritsa, ndipo N - zakambidwa n'kotheka. Tsopano tiyeni tione chitsanzo cha kuthetsa mavuto chiphunzitso Mwina.

Combinatorics. ntchito

Mwina chiphunzitso zikuphatikizapo gawo lotsatira, ntchito ya mtundu umenewu nthawi zambiri pa mayeso. Ulili: wophunzira gulu Amakhala ndi anthu makumi awiri ndi zitatu (amuna khumi ndi khumi ndi zitatu akazi). Kusankha anthu awiri. Kodi njira alipo angati kusankha anyamata awiri kapena atsikana? Ndi kopanda, tiyenera kupeza akazi awiri kapena amuna awiri. Tikuona kuti chinenero limatiuza zochita mwanzeru:

1. Pezani chiwerengero cha njira kusankha amuna.
2. Pamenepo atsikana.
3. Ife kuwonjezera zotsatira.

Pantchito yoyamba = 45. Kenako mtsikanayo: ndi kutenga 78 njira. ntchito Last: 45 + 78 = 123. Iwo likukhalira kuti pali 123 njira kusankha kapena akazi okhaokha azikwatirana monga meya, atsogoleri, kaya akazi kapena amuna.

mavuto chakale

Taona chitsanzo cha combinatorics, chitani zotsatirazi. Taganizirani chitsanzo cha kuthetsa mavuto mchiphunzitso cha Mwina kupeza magwero a zinthu chakale Mwina.

Ulili: Worth bokosi, mkati pali mipira ya mitundu yosiyanasiyana, ndicho khumi woyera, asanu ofiira ndi wakuda khumi pamaso panu. Mumapereka kukokera wina mwachisawawa. ndi mosavuta kuti nditenga mpira zimene: 1) zoyera; 2) wofiira; 3) wakuda.

Timapindula - kuwerengera options n'kotheka, muchisanzo chimenechi tili makumi. Tsopano tapeza N. Amaimira kalata A anachira mpira woyera, timapeza mamita ndi wofanana khumi - ziyende bwino. Ntchito zazikulu ulamuliro Mwina kupeza, ife tikupeza: F = 15/30, i.e. 1/2. Ndi mwayi chotero, ife adzagwa woyera mpira.

Mofananamo, ife tikupeza - mipira ofiira ndi C - wakuda. R (B) adzakhala wofanana 1/6, ndi Mwina chochitika C = 1/3. Kuti muone ngati vutoli wakhala anathana molondola, mungathe kugwiritsa ntchito ulamuliro wa ziyerekezo ndalama. zovuta zathu zimatengera zinthu A, B ndi C, pamodzi iwo ayenera kupanga unit. kafukufuku, ife tiri chimodzimodzi anakhumba mtengo, kotero, ntchito anaganiza molondola. Yankho: 1) 0,5; 2) 0.17; 3) 0.33.

NTCHITO

Taganizirani chitsanzo cha kuthetsa mavuto mchiphunzitso cha Mwina matikiti mayeso. Zitsanzo kuponya ndalama nthawi zambiri amapezeka. Tikupereka kuti disassemble mmodzi wa iwo. Ndalama kuomba katatu, kodi n'kutheka kuti pawiri mphungu kugwa ndi kamodzi michira. Reformulate ntchito: kuponyera ndalama atatu panthawi. Pakuti zosabvuta pa tebulo. Pakuti ndalama imodzi bwino:

makobidi awiri:

Ndi makobidi awiri tili kale zinayi zotsatira, koma ndi atatu pang'ono zovuta ntchito ndi zotsatira amakhala eyiti.

Tsopano timaona njira kuti zigwirizane ndi ife: 2; 3; 4. Ife tikupeza kuti mitundu itatu ya eyiti tidzakomane, kuti ndi yankho 3/8.