Video: Koj qhia li cas yog tias daim duab polynomial zoo lossis tsis zoo?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yog qhov degree yog khib thiab tus thawj coefficient yog zoo , sab laug ntawm lub daim duab taw tes nqes thiab sab xis taw tes nce. Yog qhov degree yog khib thiab tus thawj coefficient yog tsis zoo , sab laug ntawm lub daim duab taw tes nce thiab sab xis taw tes nqes.
Ua raws li qhov no, koj yuav ua li cas qhia seb qhov nqes hav yog qhov tsis zoo lossis qhov zoo?
Negative Slope Yog ib kab muaj a zoo nqes hav (i.e. m > 0), ces y ib txwm nce thaum x nce thiab y ib txwm txo thaum x txo. Yog li, daim duab ntawm kab pib nyob rau hauv qab sab laug thiab mus rau sab xis saum toj.
Tsis tas li ntawd, qhov kev hloov pauv yog dab tsi? Rate of Change . A tus nqi hloov yog a tus nqi uas piav qhia txog ib qhov ntau npaum li cas kev hloov nyob rau hauv kev sib raug rau lwm qhov ntau. Yog tias x yog qhov hloov pauv ywj pheej thiab y yog qhov hloov pauv hloov, ces. tus nqi hloov = hloov hauv y hloov hauv x. Tus nqi hloov tuaj yeem yog qhov zoo lossis tsis zoo.
Tsis tas li ntawd, koj yuav qhia li cas yog tias qhov sib npaug nce lossis txo qis?
Lub derivative ntawm ib qho kev ua haujlwm yuav raug siv los ua txiav txim seb muaj nuj nqi yog nce lossis txo ntawm txhua lub sijhawm hauv nws qhov chaw. Yog f'(x) > 0 ntawm txhua qhov taw tes hauv lub sijhawm kuv, ces qhov ua haujlwm tau hais tias yog nce ntawm I. f'(x) < 0 ntawm txhua qhov taw tes hauv lub caij nyoog I, tom qab ntawd cov haujlwm tau hais tias yog txo ntawm kuv.
Txoj kab nqes tsis zoo zoo li cas?
A nqes hav tsis zoo txhais tau hais tias ob qhov sib txawv tsis zoo cuam tshuam; uas yog, thaum x nce, y txo, thiab thaum x txo, y nce. Graphically, a nqes hav tsis zoo txhais tau hais tias raws li txoj kab ntawm kab teeb txav ntawm sab laug mus rau sab xis, kab poob.
Pom zoo:
Koj yuav ua li cas paub yog tias qhov hloov pauv theem yog qhov zoo lossis tsis zoo?
Yog tias lub sijhawm hloov pauv yog xoom, qhov nkhaus pib ntawm keeb kwm, tab sis nws tuaj yeem txav mus rau sab laug lossis sab xis nyob ntawm theem hloov. Kev hloov pauv theem tsis zoo qhia txog kev txav mus rau sab xis, thiab theem zoo hloov pauv qhia tias txav mus rau sab laug
Koj qhia li cas yog tias daim duab yog qhov muaj nuj nqis tiag tiag?
Ib qho kev ua haujlwm zoo yuav yog xoom ntawm tus nqi tshwj xeeb ntawm x tsuas yog tias tus lej yog xoom ntawm qhov x thiab tus lej tsis yog xoom ntawm x. Hauv lwm lo lus, txhawm rau txiav txim siab seb qhov kev ua haujlwm muaj txiaj ntsig puas yog xoom txhua yam uas peb yuav tsum ua yog teeb tsa tus lej sib npaug rau xoom thiab daws
Vim li cas nws thiaj li hais tias lub Orthocenter ntawm daim duab peb sab obtuse yuav tsum nyob rau sab nraud ntawm daim duab peb sab?
Nws hloov tawm tias tag nrho peb qhov siab ib txwm sib tshuam ntawm tib lub ntsiab lus - lub npe hu ua orthocenter ntawm daim duab peb sab. Lub orthocenter tsis yog ib txwm nyob hauv daim duab peb sab. Yog tias daim duab peb sab yog obtuse, nws yuav nyob sab nraud. Txhawm rau ua kom qhov no tshwm sim cov kab qhov siab yuav tsum tau txuas ntxiv kom lawv hla
Koj qhia li cas yog tias daim duab nrawm nrawm lossis qeeb?
Pib: Saib hauv lub sijhawm [0,1]. Txoj hauj lwm (tshem tawm) yog nce, yog li qhov kev tshaj tawm yog qhov zoo. Tab sis daim duab yog concave down, acceleration yog tsis zoo, yam yog qeeb, kom txog thaum nws ncav cuag tshaj tawm (thiab ceev) 0 thaum lub sij hawm 1
Koj yuav ua li cas thiaj paub tias kev sib raug zoo yog qhov zoo lossis tsis zoo?
Qhov zoo correlation coefficient txhais tau hais tias raws li tus nqi ntawm ib qho kev sib txawv nce, tus nqi ntawm lwm qhov sib txawv nce; raws li ib tug txo qhov qis dua. Qhov tsis zoo correlation coefficient qhia tau hais tias raws li ib qho kev sib txawv nce, qhov txo qis, thiab vice-versa