Mapangidwe, Sayansi
Ndi manambala zomveka chiyani? Kodi kwambiri?
Kodi pa manambala zomveka? ana Senior ndi ophunzira ukatswiri masamu mwachidziwikire mosavuta funso limeneli. Koma amene mwa chivomerezo ali kutali izi, kungakhale kovuta. Kodi kwenikweni ndi?
Chofunikira ndi chikhazikitso
Mu manambala zomveka akutanthauza anthu amene angagwiritsidwe ankayimiridwa ngati kachigawo wamba. Zabwino, zoipa, ndi ziro ali m'gulu akonzedwa izi. The numerator wa kachigawo mu nkhani iyi ayenera kukhala inteja, ndi chimene chachititsa - kuimira inteja positive.
akonzedwa Izi a masamu amatchedwa kuti Q ndipo amatchedwa "Munda wa manambala zomveka." Zikuphatikizapo onse lonse ndi zachilengedwe, amaimira monga Z ndi N. The chomwecho ya Q m'gulu kuika R. Ndi kalata umu otchedwa manambala weniweni kapena zenizeni.
lingaliro
Monga tanenera kale, manambala zomveka - ichi akonzedwa, zomwe zikuphatikizapo inteja onse ndi mfundo fractional. Iwo akhoza kuwonetsa zosiyanasiyana. Choyamba, mu mawonekedwe a tuzigawo twa wamba: 5/7, 1/5, 11/15, etc. Inde, integers akhozanso olembedwa Mofananamo: 6/2, 15/5, 0/1, - .. 10/2, etc. Chachiwiri, mtundu wina wa ulaliki - ndi amalire decimal fractional gawo: .... 0.01, -15,001006, etc. Izi mwina mitundu ambiri.
Koma pali lachitatu - zodziwitsa nusu. mtundu si sizachilendo, koma ntchito. Mwachitsanzo, kachigawo 10/3 akhoza kulembedwa ngati 3,33333 ... kapena 3, (3). Maganizo osiyana tidzakambirana manambala chomwecho. Monga mmene limatchedwa kuti ndi wofanana ndi tuzigawo twa mzake monga 3/5 ndi 6/10. Zikuoneka kuti wakhala bwino kuti chiwerengero zomveka. Koma chifukwa mawu akuti ntchito pofotokoza iwo?
Chiyambi cha dzina
Mawu "zomveka" mu chinenero chamakono Russian ambiri amanyamula tanthauzo losiyana pang'ono. M'malomwake, "m'pomveka", "dala". Koma mawu masamu ali pafupi ndi tanthauzo lenileni la mawu yobwereka. The "chiŵerengero" mu Latin - ndi "mtima", "mpukutu" kapena "magawano." Choncho, dzina umalimbikitsa akamanena za chiyani zomveka. Komabe, tanthauzo yachiwiri
zikugwira
Kuthetsa mavuto masamu, ife mowirikiza takumana ndi manambala zomveka, osadziwa eni amachita. Ndipo iwo ndi nambala ya katundu chidwi. iwo onse kutsatira pa tanthauzo la mndandanda wa zochita mwina.
Choyamba, manambala zomveka kugona malo a dongosolo. Izi zikutanthauza kuti pakati manambala awiri kungakhale ubale umodzi wokha - mwina ofanana ndi mnzake, kapena mmodzi kapena zochepa kuposa wina. Ie.
kapena = b; kapena> b, kapena
Komanso, katundu uyu wa transitivity chiŵerengero motere. Ndiko kuti, ngati munthu ali wamkulu kuposa b, b kuposa C, kenako ndi wamkulu kuposa c. M'chilankhulo cha masamu chiri motere:
(A> b) ^ (b > c) => (a> c).
Chachiwiri, pali ntchito masamu ndi manambala zomveka, ie, Komanso, wochotsera, magawano, ndipo, ndithudi, chulutsa. Mu ndondomeko ya kusintha akhoza kusankha nambala ya katundu.
- ndi + B = b + ndi (kusintha mawu malo commutativity);
- 0 + ndi = munthu + 0;
- (A + b) + m'ma = munthu + (b + c) ( associativity);
- ndi + (kutanthauza) = 0;
- AB = Ba;
- (AB) c = ndi (BC ) ( Distributivity);
- 1 = nkhwangwa 1 xa = munthu;
- nkhwangwa (1 / a) = 1 (momwe si 0);
- (A + b) m'ma = Mac + AB;
- (A> b) ^ (c > 0) => (Mac> BC) .
Pankhani wamba, osati decimal, tuzigawo twa ndi integers, zochita nawo angayambitse mavuto ena. Mwachitsanzo, Kuwonjezera ndi wochotsera ndi zotheka ndi denominators ofanana. Ngati iwo ali osiyana poyamba, ayenera kupeza wamba, ntchito chulutsa tuzigawo twa onse pa nambala inayake. Yerekezerani Nthawi zambiri zotheka pansi chikhalidwe ichi.
Division ndi chulutsa tuzigawo twa opangidwa mogwirizana ndi malamulo mwachilungamo wophweka. Kuchepa kwa chimodzi chimene Sikuti. Payokha, chulukitsani numerators ndi denominators, pamene m'kati kukhazikitsa kachigawo zochita zotheka anafunika kuchepetsa ndi zinthu zochepa.
Koma magawano, ndiye ofanana woyamba ndi kusiyana pang'ono. Pakuti mpirawo wachiwiri ayenera kupeza osiyanitsidwa, ndiye
Pomaliza, katundu wina alinso ndi manambala zomveka, wotchedwa axiom wa Archimedes. Dzina la "Mfundo" kawirikawiri M'mabuku nawonso. Ndi chomveka kuika lonse la manambala weniweni, koma osati paliponse. Choncho mfundo imeneyi siligwira ntchito kwa akanema ena ntchito zomveka. Kwenikweni, axiom izi zikutanthauza kuti pamene pali mfundo ziwiri ndi b, inu nthawi zonse kutenga okwanira kuchuluka kwa, b kuti amakhoza bwino kuposa.
dera ntchito
Choncho, amene anaphunzira kapena kukumbukira kuti chiwerengero zomveka, n'zoonekeratu kuti ntchito kulikonse: mu mlandu, zachuma, ziwerengero sayansi, umagwirira ndi maphunziro ena a sayansi. Mwachibadwa, palinso malo kwa iwo masamu. Osati nthawi zonse podziwa kuti tikulimbana ndi iwo, sitifunikira ntchito manambala zomveka. Ngakhale ana aang'ono kuphunzira kuwerenga zinthu, kudula m'magulu apulo kapena kumaliza zochita zina yosavuta, anakumana nawo. Iwo kwenikweni zatizungulira. Koma chifukwa ntchito zina iwo ali osakwanira, makamaka chitsanzo cha Lingaliro Lovomerezeka Pythagorean, tingathe kumvetsa kufunika kwa powapatsa mfundo za manambala zopanda nzeru.
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