Video: Tus qauv sib npaug ntawm lub voj voog yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Daim ntawv nruab nrab-lub voj voog ntawm lub voj voog sib npaug yog nyob rau hauv hom (x - h)2 + (y – k)2 = r2, nrog lub center yog nyob rau hauv taw tes (h, k) thiab lub vojvoog yog "r". Daim ntawv ntawm qhov sib npaug no yuav pab tau, vim koj tuaj yeem pom qhov chaw thiab lub vojvoog yooj yim.
Ntawm no, qhov sib npaug ntawm lub voj voog yog dab tsi?
Cov Daim ntawv General ntawm kev sib npaug ntawm ib lub voj voog yog x2 + y2 + 2gx +2fy + c = 0. Qhov nruab nrab ntawm cov lub voj voog yog (-g, -f) thiab lub vojvoog yog √(g2 + f2 -c). Muab ib lub voj voog hauv daim ntawv koj tuaj yeem ua kom tiav cov xwmfab hloov mus rau hauv tus qauv daim ntawv . Xav paub ntau ntxiv txog qhov no tuaj yeem pom ntawm Quadratic Kev sib npaug nplooj ntawv ntawm no.
vim li cas qhov sib npaug ntawm lub voj voog? Peb paub tias tus general kev sib npaug rau a lub voj voog yog (x - h)^2 + (y - k)^2 = r^2, qhov twg (h, k) yog qhov chaw thiab r yog lub vojvoog. Yog li ntxiv 21 rau ob sab kom tau lub sij hawm tas li mus rau sab xis ntawm tus kev sib npaug . Yog li, qhov chaw nyob ntawm (0, 2) thiab lub vojvoog yog 5.
Tom qab ntawd, daim ntawv qauv ntawm lub voj voog yog dab tsi?
Cov txheem daim ntawv ntawm ib qho kev sib npaug ntawm a lub voj voog yog. (x−h)2+(y−k)2=r2 qhov twg (h,k) yog qhov chaw thiab lub vojvoog yog r.
Dab tsi yog qhov kev sib npaug sib luag?
Cov mis 0 = Ax + By + C yog hais tias yog ' daim ntawv 'rau kev sib npaug ntawm ib kab. A, B, thiab C yog peb tus lej tiag. Thaum cov no tau muab, cov txiaj ntsig rau x thiab y uas ua rau cov lus muaj tseeb qhia ib txheej, lossis qhov chaw, ntawm (x, y) cov ntsiab lus uas daim ntawv ib txoj kab.
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