1. Tom qab siv cov khoom no, thov nco ntsoov yaug nrog dej.
2. Raws li cov khoom no yuav tsum tau siv cov dej huv, thov tsis txhob siv cov khoom hluav taws xob uas tsis tsim nyog rau kov cov dej.
3. Cov khoom no yog siv rau ntawm concave thiab convex nto lossis yuav tawg yog siv ntau dua.
4. Tsis txhob siv cov tshuaj ua kom dawb los yog ua kom dej kub, uas yuav ua rau daj thiab phem no.
5. So daim tawv rooj zaum thov saib xyuas kom tsis txhob so ib qho nyuaj, yuav ua rau muaj ntau daim txhuam cev ntawm daim txhuam cev thiab kev puas tsuaj rau lub rooj zaum tawv.
6. Thaum siv cov khoom lag luam no, thov tsis txhob nyob ze hluav taws xob thiab hluav taws tua hluav taws.