Cov txheej txheem:

Yuav ua li cas koj qhia yog hais tias ib tug transformation yog ib tug dilation?
Yuav ua li cas koj qhia yog hais tias ib tug transformation yog ib tug dilation?

Video: Yuav ua li cas koj qhia yog hais tias ib tug transformation yog ib tug dilation?

Video: Yuav ua li cas koj qhia yog hais tias ib tug transformation yog ib tug dilation?
Video: yuav ntseeg li cas thiaj hu tau tias yog tus ntseeg tiag. 2024, Kaum ib hlis
Anonim

Kev piav qhia ntawm a dilation suav nrog qhov ntsuas qhov ntsuas (lossis piv) thiab qhov nruab nrab ntawm qhov dilation . Qhov chaw ntawm dilation yog ib qho chaw ruaj khov hauv lub dav hlau. Yog qhov ntsuas qhov ntsuas yog ntau dua 1, daim duab yog qhov loj (qhov ncab). Yog qhov ntsuas qhov ntsuas yog nruab nrab ntawm 0 thiab 1, daim duab yog qhov txo qis (qis).

Hauv qhov no, dab tsi yog qhov dilation scale factor?

A dilation yog ib hom kev hloov pauv uas hloov qhov loj ntawm daim duab. Cov ntsuas qhov ntsuas , qee zaum hu ua scalar yam , ntsuas ntau npaum li cas loj lossis me dua daim duab. Hauv qab no yog ib daim duab ntawm txhua hom dilation (ib qho uas loj dua thiab ib qho me me).

Ib tug kuj nug, ua li cas koj dilate ib daim duab? Feem ntau dilations nyob rau hauv lub dav hlau coordinate siv lub hauv paus, (0, 0), raws li qhov chaw ntawm lub dilation . Pib nrog ΔABC, kos tus daim duab dilation ntawm daim duab peb sab nrog ib qhov chaw ntawm lub hauv paus chiv keeb thiab ib tug scale factor ntawm ob. Daim ntawv ceeb toom tias txhua qhov kev sib koom tes ntawm thawj daim duab peb sab tau muab faib ua qhov ntsuas qhov ntsuas (x2).

Yog li ntawd, koj yuav nrhiav tau ntsug dilation li cas?

Vertical Dilation

  1. y = C * f(x) Thiab peb kuj tuaj yeem hloov qhov y li y/C hauv qhov sib npaug qub.
  2. Piv txwv 1: Ua ntsug dilation rau lub luag haujlwm y = x2 nrog qhov ntsuas qhov ntsuas 3.
  3. Solution: y = x2
  4. Piv txwv 2: Xaiv qhov dilation ntawm daim duab y = x2 kom tau cov duab ntawm y = 4x2.
  5. tshuaj:
  6. Piv txwv 1:
  7. Kev daws:
  8. Daim duab.

Koj pom qhov ntsuas qhov ntsuas li cas?

Mus nrhiav ib ntsuas qhov ntsuas nruab nrab ntawm ob daim duab zoo sib xws, nrhiav ob sab sib txuas thiab sau qhov piv ntawm ob sab. Yog tias koj pib nrog daim duab me me, koj ntsuas qhov ntsuas yuav tsawg dua ib. Yog tias koj pib nrog daim duab loj, koj ntsuas qhov ntsuas yuav loj dua ib.

Pom zoo: