Puas yog qhov kev xeem thib ob?

Cov txheej txheem:

Puas yog qhov kev xeem thib ob?
Puas yog qhov kev xeem thib ob?
Anonim

Qhov thib ob derivative yuav yog siv los txiav txim siab hauv zos extrema ntawm kev ua haujlwm raws li qee yam xwm txheej. Yog tias qhov kev ua haujlwm muaj qhov tseem ceeb rau qhov twg f′(x)=0 thiab qhov thib ob derivative yog qhov zoo ntawm qhov no, ces f muaj qhov tsawg kawg nkaus hauv zos ntawm no. … Qhov txheej txheem no hu ua Second Derivative Test for Local Extrema.

Puas yog qhov kev xeem thib ob puas muaj tseeb?

Kev tsis lees paub thiab lees paub

Kev ntsuas thib ob tsis tuaj yeem lees paub tsim qhov no. Nws tsuas muaj peev xwm ua kom tiav cov txiaj ntsig tau lees paub txog lub zos extrema.

Thaum twg peb tsis tuaj yeem siv qhov kev xeem thib ob?

Yog f′(c)=0 thiab f″(c)=0, lossis yog f″(c) tsis muaj, ces qhov kev xeem tsis tiav.

Vim li cas qhov kev xeem thib ob ua tsis tiav?

Yog f (x0)=0, qhov kev xeem ua tsis tiav thiab ib qho yuav tsum tau tshawb xyuas ntxiv, los ntawm kev noj cov khoom siv ntxiv, lossis tau txais cov ntaub ntawv ntxiv txog daim duab. Dhau li ntawm qhov siab tshaj plaws lossis qhov tsawg kawg nkaus, qhov taw tes no kuj tseem tuaj yeem yog kab rov tav taw tes ntawm inflection.

Koj ua pov thawj li cas qhov kev xeem thib ob?

Second Derivative Test

  1. Yog f′(c)<0 f″ (c) < 0 ces x=c yog tus txheeb ze tshaj plaws.
  2. Yog f′(c)>0 f″ (c) > 0 ces x=c yog tus txheeb ze yam tsawg kawg nkaus.
  3. Yog f′(c)=0 f″ (c)=0 ces x=c tuaj yeem yog tus txheeb ze tshaj plaws, txheeb ze yam tsawg lossis tsis yog.

Pom zoo:

Nthuav cov khoom
Lub sijhawm elongation ntawm kev txhais lus uncharged trnas txav mus rau?
Nyeem ntxiv

Lub sijhawm elongation ntawm kev txhais lus uncharged trnas txav mus rau?

Peptide daim ntawv cog lus; uncharged tRNA txav mus rau qhov E site & tom qab tawm ntawm ribosome; lub mRNA tau hloov pauv 3 lub hauv paus mus rau sab laug, ua rau tRNA bearing dipeptide hloov mus rau P site P site P-site (rau peptidyl) yog qhov thib ob khi qhov chaw rau tRNA hauv ribosome.

Dab tsi yog asbestiform fibers?
Nyeem ntxiv

Dab tsi yog asbestiform fibers?

Raws li siv hauv daim ntawv tshaj tawm no, lo lus asbestiform fibers suav nrog fibers uas muaj lub zog zoo thiab yoog raws, ruaj khov, cov qauv saum npoo tsis muaj qhov tsis xws luag, thiab ntau lwm yam khoom tau piav qhia tom qab. Kev lag luam zoo asbestos yog ib qho piv txwv ntawm asbestiform fiber.

Colleen dewhurst tuag li cas?
Nyeem ntxiv

Colleen dewhurst tuag li cas?

Dewhurst tuag rau hnub Thursday ntawm mob qog noj ntshav ntawm nws lub tsev hauv New York suburb ntawm Lewisboro, hais Tom Viola, tus kws tshaj lij rau lub koomhaum uas nws ua haujlwm, Tus Ua Yeeb Yam Equity. Txawm hais tias ntau phau ntawv sau npe Dewhurst hnub nyoog li 65, nws yog 67, hais tias nws tus khub ntev, Ken Marsolais.