Isoperimetric txhais li cas?

Cov txheej txheem:

Isoperimetric txhais li cas?
Isoperimetric txhais li cas?
Anonim

Hauv kev ua lej, qhov tsis sib xws isoperimetric yog qhov tsis sib xws ntawm geometric suav nrog thaj tsam ntawm ib qho teeb tsa thiab nws qhov ntim.

Isoperimetric txhais li cas?

1: ntawm, ntsig txog, lossis muaj qhov sib npaug- siv tshwj xeeb ntawm cov duab geometrical. 2: muaj qhov ntsuas tas li -siv ntawm kab ntawm daim duab qhia chaw.

Isoperimetric teeb meem txhais li cas?

teeb meem Isoperimetric, hauv kev ua lej, qhov kev txiav txim siab ntawm cov duab ntawm lub dav hlau kaw qhov nkhaus uas muaj qhov ntev thiab kaw qhov siab tshaj plaws. (Thaum tsis muaj kev txwv ntawm cov duab, qhov nkhaus yog lub voj voog.)

Dab tsi yog qhov txaus ntshai?

Extremum, plural Extrema, hauv kev suav, txhua qhov taw qhia uas tus nqi ntawm qhov muaj nuj nqi loj tshaj (qhov siab tshaj) lossis tsawg tshaj plaws (yam tsawg kawg). Muaj ob qho tag nrho thiab cov txheeb ze (lossis hauv zos) maxima thiab minima.

Yuav ua li cas thiaj li mob siab?

Yuav Ua Li Cas Nrhiav Hauv Zos Extrema nrog Thawj Qhov Kev Xeem

  1. Nrhiav thawj qhov derivative ntawm f siv txoj cai fais fab.
  2. Teem cov derivative sib npaug rau xoom thiab daws rau x. x=0, –2, lossis 2. Peb x-tus nqi no yog tus lej tseem ceeb ntawm f.

Pom zoo:

Nthuav cov khoom
Qhov twg sidehows pib?
Nyeem ntxiv

Qhov twg sidehows pib?

Sideshows thawj zaug tshwm sim ntawm txoj kev ntawm Oakland, California thaum lub sijhawm nruab nrab xyoo 1970 Thawj qhov kev ua yeeb yam yog thawj zaug ad hoc carhows uas tib neeg yuav tuaj koom hauv Eastmont Mall lossis Foothill Square chaw nres tsheb.

Hom kev sib txuas lus twg yog qhov siab tshaj hauv kev tshaj tawm kev nplua nuj?
Nyeem ntxiv

Hom kev sib txuas lus twg yog qhov siab tshaj hauv kev tshaj tawm kev nplua nuj?

Kev sib txuas lus ntsej muag yog qhov nruab nrab nplua nuj tshaj plaws raws li MRT vim nws tso cai rau kev sib pauv ntawm tus kheej ib txhij los ntawm cov ntsiab lus lus, lub suab, lub ntsej muag, kev taw qhia ntawm saib, gestures, thiab postures.

Puas yog ib lub cubic mev ntawm asph alt hnyav?
Nyeem ntxiv

Puas yog ib lub cubic mev ntawm asph alt hnyav?

Kub Asph alt thiab pob zeb sib tov hnyav ze rau 4000 lbs ib cubic yard. Kev Ntsuas Topsoil hnyav li cov xuab zeb, gravels, thiab pob zeb zoo nkauj, Tab sis Blended Av xws li Topsoil Blend los yog Roob Blend hnyav li ntawm 1500 lbs ib cubic mev.