Video: Yuav ua li cas koj vertically shrink ib linear muaj nuj nqi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yuav Ua Li Cas: Muab qhov sib npaug ntawm a linear muaj nuj nqi , siv transformations rau graph linear muaj nuj nqi f(x) = mx + b f (x) = m x + b. Graph f(x)=x f(x) = x. Vertically stretch los yog compress lub graph los ntawm ib yam |m|.
Tsuas yog li ntawd, ua li cas koj vertically shrink ib txoj haujlwm?
Yog tias 0 <k < 1 (ib feem), cov duab yog f (x) ntsug shrunk (los yog compressed) los ntawm kev muab txhua yam ntawm nws y-coordinates los ntawm k. yog tias k yuav tsum tsis zoo, tus ntsug stretch los yog ntsws yog ua raws li qhov kev xav ntawm lub x-axis.
Ib yam li ntawd, koj ua li cas hloov ib txoj haujlwm linear mus rau sab laug? A txhais lus qe mov a muaj nuj nqi vertically yog denoted sab nraum lub muaj nuj nqi sau ntawv. Piv txwv li, lub txhais lus f(x) + 3 yuav txav mus muaj nuj nqi nce peb qhov chaw. Daim ntawv ceeb toom tias kab rov tav hloov mus rau qhov sib txawv ntawm qhov kev hloov pauv. Kab rov tav hloov ntawm f(x + 5) txav cov duab f(x) mus rau sab laug 5 qhov.
Tsis tas li ntawd, koj ua li cas txav ib txoj haujlwm tawm sab laug thiab sab xis?
Txhawm rau ua kom muaj kev hloov pauv kab rov tav, koj tsis ntxiv lossis rho tawm dab tsi ntawm b. Hloov chaw, koj ntxiv lossis rho tawm ntawm x-tus nqi ua ntej koj muab los ntawm txoj kab nqes. Tom qab ntawd koj hloov nws kab rov tav los ntawm kev hloov pauv x-tus nqi, piv txwv li, f(x) = 2(x + 1) + 5.
Qhov txawv ntawm txoj kab nqes hloov thiab kev txhais lus yog dab tsi?
Teb: Kev txhais lus piav txog kev txav mus los ntawm ib yam khoom tsis muaj hloov ntawm size qhov twg as hloov hauv txoj kab nqes piav txog qhov txawv hauv kev ntxhab ntawm ib yam khoom.
Pom zoo:
Yuav ua li cas koj thiaj paub tias ib yam dab tsi muaj nuj nqi los yog tsis?
LUS TEB: Cov lus teb piv txwv: Koj tuaj yeem txiav txim siab seb txhua lub ntsiab lus ntawm lub npe yog ua ke nrog ib qho ntawm qhov ntau. Piv txwv li, yog tias muab ib daim duab, koj tuaj yeem siv qhov ntsuas kab ntsug; Yog hais tias ib txoj kab ntsug hla cov duab ntau dua ib zaug, ces qhov kev sib raug zoo uas cov duab sawv cev tsis yog ib qho haujlwm
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