Video: Dab tsi ua rau ib qho quadratic?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov daim duab ntawm a plaub fab muaj nuj nqi yog ib tug parabola uas nws axis ntawm symmetry yog parallel rau lub y-axis. Cov coefficients a, b, thiab c hauv qhov sib npaug y = ax2 + bx + c y = a x 2 + b x + c tswj ntau yam ntawm qhov parabola zoo li thaum kos duab.
Tsuas yog li ntawd, koj yuav ua li cas paub yog tias daim duab yog plaub fab?
Yog qhov txawv yog tas li, lub daim duab yog linear. Yog qhov sib txawv tsis tas li tab sis qhov thib ob txheej ntawm qhov sib txawv yog tas li, lub graph yog quadratic . Yog qhov sib txawv ua raws tus qauv zoo ib yam li y-tus nqi, tus daim duab yog exponential. Saib cov piv txwv hauv qab no kom pom tseeb.
Qhov thib ob, daim duab ntawm ib qho kev sib npaug quadratic zoo li cas? Cov graph ntawm ib quadratic muaj nuj nqi yog U-shaped nkhaus hu ua parabola. Nws ua tau tau kos los ntawm plotting kev daws teeb meem rau cov kev sib npaug , los ntawm kev nrhiav lub vertex thiab siv lub axis ntawm symmetry rau cov lus xaiv cov ntsiab lus, los yog los ntawm kev nrhiav cov hauv paus hniav thiab vertex. Tus qauv qauv ntawm a quadratic equation yog.
Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog daim duab plaub?
Cov duab . A plaub fab muaj nuj nqi yog ib daim ntawv f(x) = ax2 + bx + c, qhov twg a, b, thiab c yog cov lej uas tsis sib npaug rau xoom. Cov daim duab ntawm a plaub fab kev ua haujlwm yog qhov nkhaus hu ua parabola. Parabolas tuaj yeem qhib rau sab saud lossis nqes thiab sib txawv hauv "dav" lossis "seepness", tab sis lawv txhua tus muaj tib yam "U" duab.
Ib nrab parabola hu ua dab tsi?
Daim duab ntawm kab zauv y = √x + 2 yog "sab saum toj ib nrab "ntawm. parabola thiab daim duab ntawm kab zauv y = - √x + 2 muab qhov "hauv qab ib nrab ." Graphing Parabolas . Cov duab ntawm quadratic equations (y = ax2 + bx + c) yog npe parabolas.
Pom zoo:
Dab tsi yog qhov txawv ntawm ib qho ultramafic ib qho mafic nruab nrab thiab felsic pob zeb?
Hauv cov txheej txheem kev faib tawm silica-cov ntsiab lus dav dav, pob zeb nrog ntau dua 65 feem pua silica hu ua felsic; cov uas muaj li ntawm 55 thiab 65 feem pua silica yog nruab nrab; cov uas muaj li ntawm 45 thiab 55 feem pua silica yog mafic; thiab cov uas tsawg dua 45 feem pua yog ultramafic
Ib qho piv txwv ntawm ib qho alloy yog dab tsi?
Ib qho piv txwv ntawm cov hlau yog sib xyaw ntawm cov hlau thiab hlau. Ib qho piv txwv ntawm cov hlau yog cov tin hauv qhov sib xyaw ntawm tooj liab thiab tin uas ua rau tooj liab. Lub alloy yog ib qho fusion ntawm ob lossis ntau dua hlau lossis cov hlau uas tsis yog hlau. Ib qho piv txwv ntawm cov hlau yog tooj dag, uas yog tsim los ntawm tooj liab thiab zinc
Dab tsi yog thawj kauj ruam ntawm kev tsim ib qho perpendicular los ntawm ib qho taw tes mus rau kab?
Txuas tus taw tes rau qhov taw tes uas cov arcs sib tshuam. Siv ib tug straightedge los xyuas kom meej cov kab yog ncaj. Txoj kab koj kos yog perpendicular rau thawj kab, los ntawm qhov muab taw tes rau ntawm kab
Dab tsi yog rau abiotic yam uas cuam tshuam rau kev faib cov kab mob hauv ib qho ecosystem?
Abiotic variables pom nyob rau hauv lub ntiaj teb ecosystems muaj xws li tej yam xws li nag, cua, kub, qhov siab, av, muaj kuab paug, as-ham, pH, hom av, thiab tshav ntuj
Dab tsi yog ib qho kev taw qhia ib qho me me?
Ib qho kev txav mus los yog kev txav raws ib txoj kab ncaj nraim. Cov kab uas siv rau cov lus tsa suab no feem ntau yog cov paub x-axis, lossis x tus lej kab. Cov khoom yuav txav mus rau pem hauv ntej lossis rov qab los ntawm txoj kab no: Rau pem hauv ntej feem ntau suav tias yog kev txav mus los zoo, thiab qhov kev txav no feem ntau suav tias yog mus rau sab xis