Video: Extraneous txhais li cas hauv lej?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv lej , ib extraneous tov (los yog spurious tov) yog ib qho kev daws, xws li hais tias mus rau ib qho kev sib npaug, uas tshwm sim los ntawm tus txheej txheem ntawm kev daws qhov teeb meem tab sis tsis yog ib qho kev daws teeb meem.
Raws li txoj cai, koj yuav ua li cas paub yog tias qhov kev daws teeb meem yog extraneous?
Rau qhia yog tias "kev daws teeb meem" yog extraneous koj yuav tsum rov qab mus rau qhov qub teeb meem thiab xyuas kom pom yog nws yog tiag ib daws . 1/(x-1) = x/(x2-1) Kev daws qhov algebrically muab x = 1. Tab sis qhov no tsis tuaj yeem yog a daws raws li ob lub denominators yog xoom thaum x yog 1. Qhov kev sib npaug no tsis muaj daws.
Tsis tas li ntawd, dab tsi ua rau muaj kev daws teeb meem ntxiv? " Extraneous " kev daws teeb meem tshwm sim vim tias thaum peb txheeb xyuas cov teeb meem, ua kom yooj yim sib npaug thiab ua ntau yam txheej txheem los daws cov khoom peb feem ntau ua kev hloov pauv qhov teeb meem los ntawm me ntsis, lossis los ntawm ntau. Thaum koj muaj qhov sib npaug thiab koj muab ob sab los ntawm 23, qhov tshwm sim yog sib npaug rau qhov qub.
Tib neeg kuj nug, dab tsi yog ib qho piv txwv kev daws teeb meem?
Extraneous Solutions . Ib tshuaj extraneous yog lub hauv paus ntawm kev hloov pauv uas tsis yog lub hauv paus ntawm qhov kev sib npaug qub vim tias nws raug cais tawm ntawm qhov sib npaug ntawm qhov qub. Piv txwv 1: x² + 4x + 2 = 4x + 2 = 4x + 2.
Nws txhais li cas rau kev daws kom tau extraneous?
Hauv lej, ib tshuaj extraneous (los yog spurious daws ) yog a daws , xws li hais tias mus rau ib qho kev sib npaug, uas tshwm sim los ntawm tus txheej txheem ntawm kev daws qhov teeb meem tab sis tsis siv tau daws rau qhov teeb meem.
Pom zoo:
Dab tsi yog cov lej ntawm cov lej lej?
Cov lej ntawm cov lej lej yog pom los ntawm kev muab cov lej ntawm cov lus sib npaug ntawm qhov nruab nrab ntawm thawj thiab zaum kawg. Piv txwv li: 3 + 7 + 11 + 15 + ···· + 99 muaj a1 = 3 thiab d = 4
Cov lej ntawm cov lej lej puas tuaj yeem tsis zoo?
Tus cwj pwm ntawm cov lej lej nyob ntawm qhov sib txawv d. Yog tias qhov sib txawv sib txawv, d, yog: Qhov zoo, qhov sib lawv liag yuav nce mus rau qhov tsis zoo (+ ∞) Tsis zoo, qhov sib lawv liag yuav rov qab mus rau qhov tsis zoo infinity (− ∞)
Tus lej qis n txhais li cas hauv lej?
Lowercase n feem ntau yog siv rau cov lej thaum x yog siv rau cov lej tiag thiab z rau cov lej nyuaj. Tab sis nws tsis yog teem rau hauv pob zeb. Lwm tsab ntawv yuav siv tau
Yuav ua li cas koj thiaj nrhiav tau cov lej ntawm cov lej lej lossis cov lej geometric?
Cov mis rau qhov suav ntawm n cov ntsiab lus ntawm geometric ib ntus yog muab los ntawm Sn = a[(r^n - 1)/(r - 1)], qhov twg a yog thawj lub sij hawm, n yog lub sij hawm tus lej thiab r yog tus qhov piv txwv
Dab tsi yog cov lej suav tag nrho cov lej suav lej thiab lej lej?
Cov lej tiag yog feem ntau muab faib ua cov lej tsis sib haum xeeb thiab tsis sib haum xeeb. Cov zauv rational suav nrog tag nrho cov lej thiab feem. Txhua tus lej tsis zoo thiab tag nrho cov lej ua rau cov lej suav. Tag nrho cov lej suav nrog txhua tus lej ntuj thiab xoom