Cov txheej txheem:
Video: Yuav ua li cas koj pom cov hauv paus hniav ntawm ib qho kev sib npaug algebraically?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov keeb kwm ntawm ib qho quadratic kev sib npaug yog muab los ntawm: x = [-b +/- sqrt(-b^2 - 4ac)]/2a. Sau lub quadratic nyob rau hauv daim ntawv ntawm ax^2 + bx + c = 0. Yog hais tias lub kev sib npaug yog nyob rau hauv daim ntawv y = ax^2 + bx + c, tsuas yog hloov cov y nrog 0. keeb kwm ntawm kev sib npaug yog cov nqi uas qhov y axis sib npaug rau 0.
Kuj nug, koj pom cov hauv paus ntawm kev ua haujlwm ntawm daim duab li cas?
A hauv paus yog tus nqi rau qhov muab muaj nuj nqi sib npaug zero. Thaum ntawd muaj nuj nqi yog plotted rau a daim duab , cov keeb kwm yog cov ntsiab lus uas muaj nuj nqi hla lub x-axis. Rau ib muaj nuj nqi , f(x), os keeb kwm yog tus nqi ntawm x rau qhov twg f(x) = 0 f (x) = 0.
Tsis tas li ntawd, qhov sib npaug ntawm cov hauv paus hniav ntawm qhov sib npaug yog dab tsi? Cov no yog hu ua keeb kwm ntawm lub quadratic kev sib npaug . Rau lub quadratic kev sib npaug ax2+bx+c = 0, the sum ntawm nws keeb kwm = –b/a thiab cov khoom ntawm nws keeb kwm = c/ua. Ib quadratic kev sib npaug tej zaum yuav raug qhia raws li ib yam khoom ntawm ob binomials.
Yog li ntawd, pes tsawg lub hauv paus puas muaj qhov sib npaug?
Qhov no txhais tau tias x = 0 yog ib qho ntawm cov keeb kwm . Qhov degree yog 3, yog li peb cia siab tias 3 keeb kwm . Tsuas muaj ib qho ua tau ua ke: 3 keeb kwm : 1 positive, 0 negative and 2 complex.
Yuav ua li cas koj daws tau cov kab zauv polynomial?
Cov kauj ruam
- Txiav txim seb koj puas muaj linear polynomial. Ib tug linear polynomial yog ib tug polynomial ntawm thawj degree.
- Teem lub equation kom sib npaug zos. Qhov no yog ib kauj ruam tsim nyog rau kev daws tag nrho cov polynomials.
- Cais lub sij hawm sib txawv. Txhawm rau ua qhov no, ntxiv lossis rho tawm qhov tsis tu ncua ntawm ob sab ntawm kab zauv.
- daws rau qhov sib txawv.
Pom zoo:
Yuav daws qhov tsis sib npaug ntawm cov kab sib npaug thiab cov kab sib npaug sib npaug li cas?
Kev daws qhov tsis sib npaug ntawm qhov sib npaug yog zoo ib yam li kev daws cov kab sib npaug. Qhov sib txawv tseem ceeb yog koj tig lub cim tsis sib xws thaum faib lossis muab faib los ntawm tus lej tsis zoo. Graphing linear inequalities muaj ob peb qhov sib txawv ntxiv. Qhov uas yog qhov ntxoov ntxoo muaj xws li qhov tseem ceeb uas qhov kev tsis sib xws ntawm cov kab tawm muaj tseeb
Cov coefficients hauv kev sib npaug tshuaj sib npaug qhia koj li cas txog cov reactants thiab cov khoom?
Cov coefficients ntawm kev sib npaug chemicalequation qhia peb cov txheeb ze ntawm moles ntawm reactants thiab cov khoom. Hauv kev daws teeb meem stoichiometric, kev hloov pauv ntawm moles ntawm reactants rau moles ntawm cov khoom raug siv. Hauv kev suav loj, cov molar loj yog xav tau los hloov cov huab hwm coj mus rau moles
Nws puas yuav ua rau pom qhov sib npaug ntawm kab sib npaug mus rau ib kab thiab los ntawm ib qho taw tes ntawm kab?
Qhov sib npaug ntawm ib kab uas yog parallel lossis perpendicular rau ib kab? Cov lus teb tau: Cov nqes hav ntawm cov kab sib npaug sib npaug. Hloov txoj kab nqes paub thiab cov kev sib koom ua ke ntawm ib qho taw tes ntawm lwm txoj kab rau hauv daim ntawv point-slope kom pom qhov sib npaug ntawm kab sib npaug
Koj pom qhov kev ntxub ntxaug thiab qhov xwm txheej ntawm cov hauv paus hniav li cas?
Qhov kev ntxub ntxaug (EMBFQ) Qhov no yog qhov qhia nyob rau hauv lub hauv paus square nyob rau hauv lub quadratic formula. Tus neeg ntxub ntxaug txiav txim qhov xwm txheej ntawm cov hauv paus hniav ntawm ib qho kev sib npaug plaub npaug. Lo lus ' xwm' yog hais txog cov naj npawb ntawm cov hauv paus hniav tuaj yeem yog - uas yog tiag tiag, rational, irrational lossis kev xav
Dab tsi yog qhov sib txawv ntawm cov kab lus sib npaug thiab qhov sib npaug sib npaug?
Cov kab lus sib npaug muaj qhov muaj txiaj ntsig zoo ib yam tab sis tau nthuav tawm nyob rau hauv ib hom ntawv sib txawv uas siv cov khoom ntawm cov lej xws li ax + bx = (a + b) x yog cov kab lus sib npaug. nruj me ntsis, lawv tsis yog 'sib npaug', yog li peb yuav tsum siv 3 kab sib luag hauv 'sib npaug' es tsis yog 2 raws li qhia ntawm no