Puas ntxiv lossis rho tawm?

Cov txheej txheem:

Puas ntxiv lossis rho tawm?
Puas ntxiv lossis rho tawm?

Video: Puas ntxiv lossis rho tawm?

Video: Puas ntxiv lossis rho tawm?
Video: puas yog koj ntshai yuav kuv ntsaim vaj 2022 -2023 2024, Lub peb hlis ntuj
Anonim

Tus ntxiv– muas kos npe, ±, yog lub cim lej nrog ntau lub ntsiab lus. Hauv kev lej, nws feem ntau qhia txog kev xaiv ntawm ob qhov txiaj ntsig tau, ib qho yog tau los ntawm kev sib ntxiv thiab lwm qhov los ntawm kev rho tawm.

+/- txhais li cas hauv lej?

(lej) Lub cim ±, lub ntsiab lus "ntxiv lossis rho tawm", siv los qhia qhov tseeb ntawm qhov kwv yees (raws li "Qhov tshwm sim yog 10 ± 0.3", txhais tau tias qhov tshwm sim yog qhov chaw ntawm 10 - 0.3, uas yog, 9.7, thiab 10 + 0.3, uas yog, 10.3), los yog raws li ib tug yooj yim shorthand rau ib tug kom muaj nuj nqis nrog ob qhov tseem ceeb ntawm kev tawm tsam kos npe thiab…

Puas yog rho tawm ntxiv lossis rho tawm?

Ntxiv thiab muab ntau qhov sib xyaw ua ke ntawm tus lej zoo thiab tsis zoo tuaj yeem ua rau tsis meej pem thiab yog li yuav tsum tau saib xyuas. Ob 'plus' ua ib qho ntxiv, ob 'minuses' ua ib qho ntxiv. A plus and a minus make a minus.

Koj paub li cas thaum siv Ntxiv lossis rho tawm?

Qhia tias peb xav tau qhov zoo thiab qhov tsis zoo ntawm lub hauv paus ntawm lub radicand peb muab lub cim ± (nyeem ntxiv rau rho tawm) rau pem hauv ntej ntawm lub hauv paus. Zero muaj ib lub hauv paus square uas yog 0. Cov lej tsis zoo tsis muaj cov hauv paus square tiag vim ib lub xwmfab yog qhov zoo lossis 0.

ntxiv lossis rho tawm 5% txhais li cas?

Los ntawm Longman Dictionary ntawm Kawm Lus Askiv ntxiv lossis rho tawm los hais tias tus lej yuav ntau dua lossis tsawg dua los ntawm qee tus nqi Muaj peev xwmqhov txawv ntawm ntxiv lossis rho tawm 5% hauv tus nqi uas tau hais.

Pom zoo: