Video: Dab tsi yog quadratic muaj nuj nqi thiab piv txwv?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Qee yam piv txwv ntawm quadraticfunction
Pom tias daim duab ntawm lub quadratic muaj nuj nqi yog a parabola . Qhov no txhais tau hais tias nws yog ib qho nkhaus nrog ib lub pob. Cov duab yog symmetric txog ib kab hu ua lub axis ntawm symmetry. Qhov taw tes uas lub axis ntawm symmetry intersects. parabola yog lub npe hu ua vertex.
Ib yam li ntawd, nws raug nug, uas yog ib qho kev ua haujlwm quadratic?
A quadratic muaj nuj nqi yog ib daim ntawv f(x) = ax2 + bx + c, qhov twg a, b, thiab c yog cov lej nrog qhov sib npaug rau xoom. Graph ntawm a quadratic muaj nuj nqi yog ib tug nkhaus hu ua parabola. Parabolas tuaj yeem qhib rau sab saud lossis nqes thiab varyin "dav" lossis "seepness", tab sis lawv txhua tus muaj tib yam "U" zoo li.
Kuj Paub, quadratics siv li cas hauv lub neej tiag tiag? Quadratic equations yog tiag siv txhua hnub lub neej , raws li thaum xam cov cheeb tsam, txiav txim siab aproduct's profit los yog formulating qhov ceev ntawm ib yam khoom. Quadratic equations xa mus rau qhov sib npaug nrog tsawg kawg yog qhov sib txawv ntawm qhov sib txawv, nrog rau cov qauv feem ntau yog ax² + bx + c = 0.
Yog li ntawd, koj yuav sau ib lub quadratic function li cas?
F(x) = ax^2 + bx + c, qhov twg a, b, thiab c yog qhov qub. quadratic muaj nuj nqi Thaum koj tau txais peb lub ntsiab lus, ua raws li cov kauj ruam no: 1. Txuas rau qhov x thiab y qhov tseem ceeb rau hauv daim ntawv dav dav ntawm quadratic muaj nuj nqi thiab ua kom yooj yim.
A yog dab tsi nyob rau hauv lub quadratic formula?
Cov Quadratic Formula siv cov "a", "b", thiab "c" los ntawm "ax2 + bx + c", qhov "a", "b", thiab "c" yog cov lej xwb; lawv yog "tus lej coefficients" ntawm quadraticequation lawv twb muab rau koj daws.
Pom zoo:
Dab tsi yog qhov sau thiab ntau ntawm sine muaj nuj nqi?
Cov haujlwm sine thiab cosine muaj lub sijhawm ntawm 2π radians thiab tangent muaj nuj nqi muaj aperiod ntawm π radians. Domain thiab ntau yam: Los ntawm graphsabove peb pom tias rau ob qho tib si sine thiab cosinefunctions tus sau yog txhua tus lej tiag thiab qhov ntau yog txhua qhov tseeb ntawm & rho tawm 1 txog +1 suav nrog
Yuav ua li cas koj nrhiav tau lub cim sawv cev ntawm ib tug quadratic muaj nuj nqi?
Quadratic functions tuaj yeem sawv cev los ntawm kev sib npaug, y(x) = ax2 + bx + c, qhov twg a, b, thiab c yog qhov tsis tu ncua, thiab a ≠ 0. Daim foos no raug xa mus rau daim ntawv qauv
Yuav ua li cas koj pom ib tug nyob rau hauv ib tug quadratic muaj nuj nqi?
Qhov kev ua haujlwm quadratic f(x) = a(x -h)2 + k, tsis sib npaug rau xoom, yog hais tias nyob rau hauv cov qauv. Yog tias qhov zoo, daim duab qhib rau sab saud, thiab yog tias qhov tsis zoo, ces nws qhib downward. Txoj kab ntawm symmetry yog txoj kab x = h, thiab vertex yog qhov taw tes (h, k)
Yuav ua li cas koj thiaj nrhiav tau tus nqi siab tshaj plaws ntawm lub quadratic muaj nuj nqi?
Yog tias koj tau txais cov mis y = ax2 + bx + c, ces koj tuaj yeem pom tus nqi siab tshaj plaws uas siv cov mis max = c- (b2 / 4a). Yog tias koj muaj qhov sib npaug y = a (x-h) 2 + k thiab theatrem tsis zoo, ces qhov siab tshaj plaws yog k
Yuav ua li cas koj thiaj paub tias muaj nuj nqi yog lub zog muaj nuj nqi?
VIDEO Ib yam li ntawd, tib neeg nug, dab tsi ua rau lub zog ua haujlwm? A lub zog ua haujlwm yog a muaj nuj nqi qhov twg y = x ^n qhov twg n yog tus lej tiag tiag. Ntau tus niam txiv muaj nuj nqi xws li linear muaj nuj nqi thiab quadratic muaj nuj nqi yog qhov tseeb lub zog ua haujlwm .