Nyob rau theem no hauv kev txhim kho kev ua lag luam, nws tau ua qhov tseem ceeb rau yuav luag txhua lub lag luam kom paub qhov ntim zoo ntawm kev muag khoom ntawm cov khoom muag, kev ua haujlwm lossis kev pabcuam.
Nws yog qhov tsim nyog
Kev paub dav dav txog kev txheeb xyuas nyiaj txiag
Cov Lus Qhia
Kauj ruam 1
Ua ntej, koj yuav tsum txiav txim siab seb lub tswvyim ntawm "kev muag khoom" txhais tau li cas. Cov muag khoom ntim yog lub tswvyim yooj yim uas suav tag nrho cov nyiaj tau los ntawm ib qho kev lag luam rau kev muag khoom, kev ua haujlwm lossis kev pabcuam rau lub sijhawm qhia. Txhawm rau txiav txim siab qhov ntim ntawm qhov muag, nws yog qhov yuav tsum tau cia siab rau lub tswvyim ntawm kev muag khoom nqa. Kev muag khoom sab nrauv yuav sib npaug rau tag nrho cov nqi ntawm cov khoom muag, kev ua haujlwm lossis cov kev pabcuam muag cov khoom muag, kev ua haujlwm lossis kev pabcuam muag nrog credit.
Ua ntej tshaj plaws, txhawm rau suav cov ntim khoom muag, xav txog cov qauv mis dav dav rau kev suav cov nqi no:
Rt (P) = TxP, qhov twg:
Rt yog tag nrho cov nyiaj;
P yog qhov ntim ntawm qhov teeb meem;
T yog qhov ntau ntawm cov khoom muag.
Nws ua raws los ntawm cov qauv no uas Rt (tag nrho cov nyiaj tau los) nyob ntawm qhov ntim ntawm cov txiaj ntsig (P) ntawm cov khoom muag, kev ua haujlwm lossis kev pabcuam thiab tus nqi (T) rau lawv.
Kauj ruam 2
Tab sis yog tias peb xav txog qhov piv txwv ntawm lub tuam txhab ruaj nrog txoj cai sib tw zoo meej, peb tau txais ntawd T = const. Thiab nyob hauv rooj plaub thib ob, peb tau txais cov qauv hauv qhov uas ua haujlwm nyob ntawm tus nqi ntawm cov khoom muag.
Kauj ruam 3
Thiab txhawm rau xaus kev kos duab ntawm cov mis zoo tshaj plaws rau kev xam lub ntim ntawm kev muag khoom, peb nco ntsoov tias thaum xam nws tsim nyog yuav tsum coj mus rau hauv tus nqi ntawm tag nrho cov nqi. Vim tias tus nqi ntawm tag nrho cov nqi nyob ntawm tag nrho cov khoom ntim, i.e. cov nqi nce raws li qhov nce hauv kev tsim khoom. Raws li qhov tshwm sim, peb xaus lus: qhov ntim ntawm kev muag khoom ntawm cov khoom lag luam, kev ua haujlwm lossis kev pabcuam los ntawm ib qho kev lag luam yog nyob ntawm qhov ntim ntawm cov khoom lag luam, kev ua haujlwm lossis kev pabcuam, i.e. tus naj npawb ntawm kev muag khoom ntawm ib qho kev lag luam rau qee lub sijhawm yog teem los ntawm tus naj npawb ntawm cov khoom lag luam.
C (P) = Rt (P) -Ct (P), qhov twg:
C (P) - ntim muag;
T (P) - tag nrho cov nqi.
