Video: Koj tuaj yeem qhia tau li cas yog tias ib qho kev nthuav qhia yog polynomial?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Rau ib kev qhia ua a polynomial lub sij hawm, tej variables nyob rau hauv lub kev qhia yuav tsum muaj tag nrho cov naj npawb powers (los yog lwm tus "nkag siab" lub zog ntawm 1, xws li hauv x1, uas ib txwm sau ua x). Ib tus lej dawb kuj tuaj yeem yog a polynomial lub sij hawm.
Hauv qhov no, dab tsi ua rau ib qho kev nthuav qhia polynomial?
Hauv lej, a polynomial yog ib kev qhia muaj cov variables (tseem hu ua indeterminates) thiab coefficients, uas tsuas yog kev khiav hauj lwm ntawm ntxiv, rho tawm, sib npaug, thiab tsis-negative integer exponents ntawm variables. Ib qho piv txwv ntawm a polynomial ntawm ib qho indeterminate, x, yog x2 4x + 7.
Tsis tas li ntawd, dab tsi yog xoom polynomial? Zero Polynomial . Qhov tsis tu ncua polynomial . nws cov coefficients tag nrho yog sib npaug rau 0. Qhov sib thooj polynomial muaj nuj nqi yog qhov ua haujlwm tas li nrog tus nqi 0, tseem hu ua xoom daim ntawv qhia. Cov xoom polynomial yog tus additive tus kheej ntawm cov additive pab pawg neeg ntawm polynomials.
Tsis tas li ntawd, polynomial nrog 4 nqe lus hu ua dab tsi?
A polynomial ntawm plaub nqe lus yog qee zaum hu ua ib tug quadrinomial, tab sis yeej tsis xav tau cov lus zoo li no. Tias yog vim tus naj npawb ntawm nqe lus hauv a polynomial tsis tseem ceeb.
Yuav ua li cas tsis yog ib tug polynomial?
Txoj Cai: Dab tsi yog qhov tsis yog Polynomial Polynomials tsis tuaj yeem muaj kev faib los ntawm qhov sib txawv. npr, 2 y27x/4 yog a polynomial , vim 4 tsis yog qhov sib txawv. Txawm li cas los xij, 2y2 + 7x / (1 + x) tsis yog a polynomial raws li nws muaj kev faib los ntawm kev sib txawv. Polynomials ua tsis tau muaj cov cim tsis zoo.
Pom zoo:
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