Video: Vim li cas cov theorem seem ua haujlwm?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov seem theorem hais tias f(a) yog tus seem thaum lub polynomial f(x) muab faib los ntawm x - a. Yog li, muab ib tug polynomial, f (x), los saib seb ib tug linear binomial ntawm daim ntawv x - a yog ib tug yam ntawm polynomial, peb daws rau f(a). Yog tias f(a) = 0, ces x - a yam , thiab x - a tsis yog a yam txwv tsis pub.
Ib yam li ntawd, nws raug nug, qhov seem theorem ua haujlwm li cas?
Cov seem theorem hais cov nram qab no: Yog tias koj faib ib tug polynomial f(x) los ntawm (x - h), ces tus seem yog f(h). Cov theorem hais tias peb seem sib npaug f(h). Yog li ntawd, peb ua tsis tas yuav siv sij hawm ntev, tab sis tsuas yog yuav tsum tau ntsuas cov polynomial thaum x = h kom pom cov seem.
Ib tug kuj nug, qhov seem ntawm 0 txhais li cas? Yog tias x - c yog qhov tseem ceeb, koj tuaj yeem rov sau tus thawj polynomial li (x - c) (quotient). Koj tuaj yeem siv hluavtaws faib los pab koj nrog hom teeb meem no. Cov Tseem tshuav Theorem hais tias f(c) = the seem . Yog li ntawd yog hais tias tus seem tawm los ua 0 thaum koj siv hluavtaws faib, ces x - c yog qhov tseem ceeb ntawm f(x).
Tsis tas li ntawd, lub ntsiab lus ntawm Remainder Theorem yog dab tsi?
Cov Remainder Theorem hais tias peb tuaj yeem rov ua dua lub polynomial nyob rau hauv cov nqe lus ntawm tus divisor, thiab mam li ntsuam xyuas cov polynomial ntawm x = a. Tab sis thaum x = a, qhov "x – a" tsuas yog xoom!
Puas yog xoom qhov seem?
Thaum ib lub sij hawm ("dividend") muab faib los ntawm lwm lub sij hawm ("divisor"), qhov tshwm sim yog "quotient" thiab " seem ". Thaum lub seem yog xoom , ob qho tib si quotient thiab divisor yog yam ntawm cov nyiaj faib. 0 yog o seem . Txij li thaum seem yog xoom , ob qho tib si 2 thiab 3 yog yam ntawm 6.
Pom zoo:
Qhov theorem twg zoo tshaj qhia tias vim li cas Kab J thiab K yuav tsum sib npaug?
Lub converse alternate sab nrauv lub kaum sab xis theorem justifies vim li cas kab j thiab k yuav tsum yog parallel. Lub converse alternate sab nrauv lub kaum sab xis theorem hais tias yog hais tias ob kab yog txiav los ntawm ib tug transversal thiaj li alternate sab nrauv ces kaum yog congruent, ces cov kab yog parallel
Yuav ua li cas yog vim li cas tus qauv ntawm ib qho enzyme tseem ceeb heev rau nws txoj haujlwm hauv cov khoom muaj sia?
Enzymes ua kom cov tshuaj tiv thaiv uas tshwm sim hauv cov hlwb. Qhov kev ua haujlwm no cuam tshuam ncaj qha rau lawv cov qauv, nrog rau txhua qhov enzyme tau tshwj xeeb zoo li tus ua kom muaj zog rau ib qho tshuaj tiv thaiv. Kev poob ntawm cov qauv ua rau poob haujlwm. - Kub, pH, thiab kev tswj cov molecules tuaj yeem cuam tshuam rau kev ua haujlwm ntawm cov enzymes
Dab tsi yog qhov tsawg kawg nkaus txwv rau cov chlorine seem hauv cov dej haus?
Qhov siab tshaj plaws pub rau WHO tus nqi pub dawb chlorine seem hauv cov dej haus yog 5 mg / L. Qhov tsawg kawg nkaus pom zoo rau WHO tus nqi rau cov tshuaj dawb chlorine seem hauv cov dej haus yog 0.2 mg / L. CDC pom zoo kom tsis pub tshaj 2.0 mg / L vim muaj kev txhawj xeeb txog kev saj, thiab cov tshuaj chlorine uas seem nyob hauv lub sijhawm hauv cov dej khaws cia
Vim li cas ho hu ua pob khawm Theorem?
Lub 'suav nrog lub kaum sab xis' yog lub kaum sab xis tsim los ntawm ob sab ntawm daim duab peb sab uas tau hais hauv qhov kev xav no. Qhov kev xav no yog hu ua 'Hinge Theorem' vim nws ua raws li lub hauv paus ntsiab lus ntawm ob sab uas tau piav qhia hauv daim duab peb sab uas yog 'hinged' ntawm lawv cov vertex. (Tej zaum kuj yuav raug hu ua SSS Inequality Theorem.)
Cov txheej txheem dab tsi yog lub luag haujlwm rau txoj haujlwm ua haujlwm sib txawv?
Position-effect variegation (PEV) tshwm sim thaum cov noob ib txwm nyob hauv euchromatin yog sib xyaw nrog heterochromatin los ntawm kev hloov kho lossis hloov pauv. Thaum lub ntim ntim heterochromatin kis thoob plaws heterochromatin / euchromatin ciam teb, nws ua rau kev hloov pauv ntawm kev ntsiag to hauv tus qauv stochastic