Cov txheej txheem:
Video: Dab tsi yog cov kauj ruam los daws qhov tsis sib xws ntawm ob kauj ruam?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Nws siv ob kauj ruam los daws qhov sib npaug lossis qhov tsis sib xws uas muaj ntau tshaj ib qho kev ua haujlwm:
- Simplify siv qhov sib txawv ntawm qhov sib ntxiv lossis rho tawm.
- Ua kom yooj yim ntxiv los ntawm kev siv qhov sib txawv ntawm qhov sib npaug lossis faib.
Tib neeg kuj nug, koj yuav daws ob kauj ruam tsis sib xws li cas?
Rau daws ib ob - kauj ruam tsis sib xws , undo qhov sib ntxiv los yog rho ua ntej, siv inverse operations, thiab ces undo lub multiplication los division. Lub inverse lag luam ntawm ntxiv yog rho tawm thiab vice versa. Ib yam li ntawd, kev ua haujlwm rov qab ntawm kev sib faib yog faib thiab rov ua dua.
vim li cas koj thiaj li yuav tsum tig lub cim tsis sib xws? Multiplying thiab Dividing Kev tsis sib xws by Negative Numbers Qhov teeb meem loj nyob qhov twg koj 'yuav yuav tsum tig lub cim tsis sib xws yog thaum koj multiply los yog faib ob sab ntawm ib kev tsis sib xws los ntawm tus lej tsis zoo. Tam sim no cais tus x ntawm sab laug los ntawm kev txav mus tas li, 6, mus rau lwm sab ntawm tus kev tsis sib xws.
Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog cov kauj ruam los daws qhov tsis sib xws?
Txhawm rau daws qhov tsis sib xws siv cov kauj ruam hauv qab no:
- Kauj Ruam 1 Tshem tawm cov feem ntau los ntawm kev muab tag nrho cov ntsiab lus los ntawm tus lej qis tshaj ntawm txhua feem.
- Kauj Ruam 2 Ua kom yooj yim los ntawm kev sib txuas zoo li cov ntsiab lus ntawm txhua sab ntawm qhov tsis sib xws.
- Kauj Ruam 3 Ntxiv lossis rho tawm kom tau txais qhov tsis paub ntawm ib sab thiab tus lej ntawm lwm qhov.
Dab tsi yog algebraic inequality?
Ib algebraic tsis sib xws yog thaum tsis muaj tus nqi tshwj xeeb lossis tus lej uas ob tog sib npaug. Hloov chaw, peb yuav tab tom nrhiav ntau qhov tseem ceeb uas txaus siab rau nqe lus.
Pom zoo:
Yuav daws qhov tsis sib npaug ntawm cov kab sib npaug thiab cov kab sib npaug sib npaug li cas?
Kev daws qhov tsis sib npaug ntawm qhov sib npaug yog zoo ib yam li kev daws cov kab sib npaug. Qhov sib txawv tseem ceeb yog koj tig lub cim tsis sib xws thaum faib lossis muab faib los ntawm tus lej tsis zoo. Graphing linear inequalities muaj ob peb qhov sib txawv ntxiv. Qhov uas yog qhov ntxoov ntxoo muaj xws li qhov tseem ceeb uas qhov kev tsis sib xws ntawm cov kab tawm muaj tseeb
Dab tsi yog qhov txawv ntawm qhov sib txawv ntawm qhov sib txawv thiab qhov sib txawv ntawm qhov ntab?
Integers thiab floats yog ob yam sib txawv ntawm cov ntaub ntawv tus lej. Ib tus lej (feem ntau hu ua anint) yog tus lej tsis muaj tus lej lej. Float isa floating-point number, uas txhais tau hais tias nws yog tus lej uas muaj tus lej lej. Floats siv thaum xav tau ntau dua
Koj yuav ua li cas thiaj daws tau qhov sib npaug ntawm qhov tsis sib xws?
Muaj peb kauj ruam: Rov kho qhov sib npaug kom 'y' nyob rau sab laug thiab txhua yam ntawm sab xis. Teem lub 'y =' kab (ua rau nws yog ib txoj kab ruaj khov rau y≤ lossis y≥, thiab ib txoj kab dashed rau y) Duab ntxoov ntxoo saum kab rau 'ntau tshaj' (y> lossis y≥) lossis hauv qab kab rau ib qho 'tsawg dua' (y < lossis y≤)
Dab tsi yog qhov sib txawv ntawm qhov sib txawv ntawm cov kab sib txuas thiab ntau qhov sib piv?
6. (2 lub cim) Qhov sib txawv ntawm cov kab sib txuas (kev sib piv) thiab ntau qhov sib piv yog dab tsi? Cov kab sib xyaw ua ke yog npaj sib piv; uas yog, tshwj xeeb txhais tau tias yog ua ke nyob rau hauv ntau txoj kev thiab contrasted nrog rau lwm yam kev sib txuas ntawm txhais tau tias
Dab tsi yog cov kauj ruam ntawm kev daws qhov sib npaug?
Txhawm rau daws qhov sib npaug ntawm ob kauj ruam, txhua yam koj yuav tsum ua yog cais qhov sib txawv los ntawm kev siv qhov sib ntxiv, rho tawm, sib faib, lossis faib. daws qhov kev sib npaug ob kauj ruam los ntawm kev sib npaug ntawm qhov kawg es tsis txhob faib. x/5 + 7 = -3 = (x/5 + 7) - 7 = -3 - 7 = x/5 = -10. x / 5 = -10 * 5. x = -50