Ib qho taw qhia inflection yog ib qho taw qhia ntawm daim duab uas qhov kev hloov pauv thib ob kos npe. Yuav kom qhov thib ob derivative hloov cov paib, nws yuav tsum yog xoom lossis tsis tau txhais. Yog li txhawm rau nrhiav cov ntsiab lus inflection ntawm kev ua haujlwm peb tsuas yog yuav tsum kuaj xyuas cov ntsiab lus uas f (x) yog 0 lossis tsis tau txhais.
Puas cov ntsiab lus cuam tshuam yuav tsum tau txhais?
A point of inflection is a point on the graph at which the concavity of the graph hloov. Yog tias qhov kev ua haujlwm tsis tau txhais ntawm qee tus nqi ntawm x, tsis tuaj yeem muaj qhov cuam tshuam. Txawm li cas los xij, concavity tuaj yeem hloov pauv thaum peb dhau mus, sab laug mus rau sab xis hla qhov x qhov tseem ceeb uas muaj nuj nqi tsis tau txhais.
Puas tsis muaj cov ntsiab lus cuam tshuam?
Points Of Inflection: Piv txwv nqe lus nug 3
Plag: Rau ib daim duab kom muaj qhov taw tes inflection, qhov thib ob derivative yuav tsum sib npaug rau xoom. Peb kuj xav kom lub concavity hloov ntawm lub sij hawm ntawd. …, tsis muaj qhov tseem ceeb uas qhov no sib npaug li xoom, yog li tsis muaj cov ntsiab lus inflection.
Yuav ua li cas thaum qhov thib ob derivative tsis tau txhais?
Cov neeg sib tw rau cov ntsiab lus tsis txaus ntseeg yog cov ntsiab lus uas qhov thib ob derivative yog xoomthiabcov ntsiab lus uas qhov thib ob derivative tsis tau txhais. Nws yog ib qho tseem ceeb kom tsis txhob saib dhau ib tus neeg sib tw.
Puas yog qhov taw qhia kev kis mob ib txwm zoo?
Qhov thib ob derivative yog xoom (f (x)=0): Thaum qhov thib ob derivative yog xoom, nws sib raug rau qhov ua tau tshwm sim. Yog hais tias tusthib ob derivative changes kos npe nyob ib ncig ntawm xoom (los ntawm qhov zoo mus rau qhov tsis zoo, lossis qhov tsis zoo rau qhov zoo), ces qhov taw tes yog qhov taw tes inflection.
