Cov txheej txheem:
Video: Yuav ua li cas ua ib lub cubic graph?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yog hais tias qhov sib npaug yog nyob rau hauv daim ntawv y = (x − a)(x − b)(x − c) yuav tsum siv txoj hauv qab no:
- Nrhiav cov x-intercepts los ntawm kev muab y = 0.
- Nrhiav y-intercept los ntawm kev muab x = 0.
- Npaj cov ntsiab lus saum toj no los kos duab kub nkhaus.
- Nrhiav cov x-intercepts los ntawm kev muab y = 0.
- Nrhiav y-intercepts los ntawm kev muab x = 0.
Kuj nug, ua li cas koj sau lub cubic muaj nuj nqi?
A kub function muaj cov qauv ntawm f(x) = ax3 + bx ib2 + cx + d. Qhov "basic" kub function yog f(x) = x3. Koj tuaj yeem pom nws hauv daim duab hauv qab no. Hauv ib kub function , lub zog siab tshaj ntawm x sib txawv (s) yog 3.
Tsis tas li ntawd, qhov piv txwv cubic function yog dab tsi? A kub function yog ib qho muaj nuj nqi ntawm daim ntawv y = ax^3 + bx^2 + cx + d, qhov twg a, b, c, thiab d yog qhov tsis tu ncua, thiab a tsis sib npaug rau xoom, lossis a polynomial ua haujlwm nrog lub siab tshaj plaws exponent sib npaug 3. Cov hom ntawm muaj nuj nqi muaj ntau heev nyob rau hauv daim ntawv thov uas muaj ntim.
Ib yam li ntawd, koj ua li cas hloov cov duab cubic?
Yog tias y = f(x + d) thiab d > 0, the daim duab undergoes kab rov tav ua haujlwm d units mus rau sab laug. Yog tias y = f(x + d) thiab d <0, the daim duab undergoes kab rov tav ua haujlwm d units mus rau sab xis.
Dab tsi yog daim duab ntawm lub cubic muaj nuj nqi hu ua?
A kub function (a.k.a. thib peb-degree polynomial muaj nuj nqi ) yog ib qho uas tuaj yeem sau rau hauv daim ntawv. f(x) = ax3 + bx2 + cx + d. (1) Quadratic muaj nuj nqi tsuas yog tuaj nyob rau hauv ib qho yooj yim duab, ib tug parabola. Lub parabola tuaj yeem ncab lossis compressed.
Pom zoo:
Yuav ua li cas koj pom lub kaum sab xis nruab nrab muab qhov chaw thiab lub vojvoog ntawm ib lub sector?
Kev txiav txim siab Central Angle Los ntawm Sector Area (πr2) × (central angle in degrees ÷ 360 degrees) = sector area. Yog hais tias lub hauv paus lub kaum sab xis ntsuas nyob rau hauv radians, lub mis hloov mus ua: sector cheeb tsam = r2 × (central kaum hauv radians ÷ 2). (θ ÷ 360 degree) × πr2. (52.3 ÷ 100π) × 360. (52.3 ÷ 314) × 360
Yuav ua li cas koj txiav txim siab npaum li cas ntawm cov kua qaub uas yuav tsum tau neutralize lub hauv paus?
Kev daws qhov teeb meem Acid-Base Neutralization Kauj Ruam 1: Muab xam cov moles ntawm OH-. Molarity = moles / ntim. moles = Molarity x Volume. moles OH- = 0.02 M/100 milliliters. Kauj ruam 2: Xam qhov ntim ntawm HCl xav tau. Molarity = moles / ntim. Volume = moles/molarity. Volume = moles H+/0.075 Molarity
Yuav ua li cas koj pom qhov ntim hauv cubic units?
Chav ntsuas Volume = ntev x dav x qhov siab. Koj tsuas yog yuav tsum paub ib sab kom paub qhov ntim ntawm lub voos xwmfab. Cov ntsuas ntsuas rau ntim yog cubic units. Volume yog nyob rau hauv peb-dimensions. Koj tuaj yeem muab cov sab hauv txhua qhov kev txiav txim. Sab twg koj hu ntev, dav, lossis qhov siab tsis muaj teeb meem
Yuav ua li cas koj muab cubic meters?
Cov mis rau ntsuas ntim yog qhov siab x dav x ntev. Hais, piv txwv li, koj xav ntsuas qhov ntim ntawm koj lub pas dej da dej. Koj pom tias nws ntsuas 2 meters tob (qhov siab), 10 meters dav thiab 12 meters ntev. Txhawm rau nrhiav cov cubic meters, koj muab peb ua ke: 2 x 10 x 12 = 240 cubic meters
Lub cubic muaj nuj nqi ua li cas?
Qhov sib npaug ntawm daim ntawv no thiab nyob rau hauv cov duab ntawm ib tug parabola, thiab txij li thaum b yog qhov zoo, nws nce mus rau txhua sab ntawm lub vertex. Ua si nrog ntau yam txiaj ntsig ntawm b. Raws li b tau loj dua lub parabola tau steeper thiab 'narrower'. Thaum b yog qhov tsis zoo nws nqes downwards txhua sab ntawm lub vertex