Cov txheej txheem:
- Dab tsi yog daim duab peb sab sab sauv nrog piv txwv?
- Qhov twg ntawm matrix yog daim duab peb sab sab sauv?
- piv txwv ntawm daim duab peb sab yog dab tsi?
- Scalar matrix nrog piv txwv yog dab tsi?
Video: Formula rau sab sauv daim duab peb sab?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
A matrix A=(aij)∈Fn×n is called up triangular if aij=0 for i>j.
Dab tsi yog daim duab peb sab sab sauv nrog piv txwv?
Ib qho duab peb sab sab sauv yog daim duab peb sab matrix nrog tag nrho cov ntsiab lus sib npaug hauv qab kab pheeb ces kaum. Nws yog square matrix nrog lub ntsiab aij qhov twg aij=0 rau tag nrho j < i. Piv txwv li 2 × 2 matrix. Lus Cim: Cov duab peb sab saum toj yog cov square matrices nruj me ntsis.
Qhov twg ntawm matrix yog daim duab peb sab sab sauv?
Nyob rau hauv lej kev qhuab qhia ntawm linear algebra, daim duab peb sab matrix yog ib yam tshwj xeeb ntawm square matrix. Lub square matrix yog hu ua daim duab peb sab yog tias tag nrho cov nkag saum toj no lub ntsiab kab pheeb ces kaum yog xoom. Ib yam li ntawd, a square matrix yog hu ua daim duab peb sab sab saud yog tias tag nrho cov nkag hauv qab ntawm kab pheeb ces kaum yog xoom.
piv txwv ntawm daim duab peb sab yog dab tsi?
Hauv lwm lo lus, lub square matrix yog sab sauv daim duab peb sab yog tias tag nrho nws cov khoom nkag hauv qab kab pheeb ces kaum yog xoom. Piv txwv ntawm 2 × 2 sab sauv daim duab peb sab: A square matrix nrog cov ntsiab lus sij=0 rau j > i yog termed qis triangular matrix.
Scalar matrix nrog piv txwv yog dab tsi?
Lub scalar matrix yog square matrix nyob rau hauv uas tag nrho cov off-diagonal ntsiab yog xoom thiab tag nrho cov on-diagonal ntsiab yog sib npaug. … Piv txwv li, (−300−3)=−3I2×2, (500050005)=5(100010001)=5I3 yog scalar matrices.
Pom zoo:
Puas yog daim duab peb sab sib npaug yog daim duab peb sab?
No, ib daim duab peb sab tsis tuaj yeem yog daim duab peb sab sib npaug . Puas yog daim duab peb sab sib npaug yog daim duab peb sab txoj cai piav qhia koj cov lus teb? Daim duab peb sab sib npaug tsis tuaj yeem yog daim duab peb sab yogQhov no ua rau kev nkag siab vim tias lub kaum sab xis ntsuas hauv ib daim duab peb sab, tsis yog daim duab peb sab sib npaug, sib npaug 180 degrees.
Thaum twg lub chaw nyob sab hauv daim duab peb sab?
Definition Lub incenter yog ib qho ntawm daim duab peb sab cov ntsiab lus ntawm concurrency tsim los ntawm kev sib tshuam ntawm daim duab peb sab 3 lub kaum sab xis bisectors. Yog tias daim duab peb sab yog obtuse, xws li tus ntawm daim duab hauv qab no ntawm sab laug, ces lub incenter nyob rau hauv daim duab peb sab sab hauv .
Nyob rau hauv ib lub kaum sab xis daim duab peb sab r yog sib npaug?
Txoj Kev: Cov qauv rau kev xam qhov ntsuas ntawm lub kaum sab xis ntawm daim duab peb sab tuaj yeem muab tau raws li r=(P + B - H) / 2 Thiab peb paub tias thaj tsam ntawm ib qho lub voj voog yog PIr 2 qhov twg PI=22 / 7 thiab r yog lub vojvoog ntawm lub voj voog.
Nyob hauv daim duab peb sab scalene sab ntev?
Nyob rau hauv txhua daim duab peb sab, sab shortest yog opposite lub kaum tsawg tshaj plaws thiab lub ntev sab yog opposite lub kaum loj tshaj . Puas yog daim duab peb sab scalene qhov ntev tshaj plaws yog opposite lub kaum sab xis nrog qhov loj tshaj plaws ntsuas?
Peb puas xav tau daim duab rau daim ntawv hla tebchaws rov?
Koj yuav tsum muab ib daim duab nrog koj daim ntawv hla tebchaws. Tag nrho peb cov cai yees duab siv tau rau cov neeg laus thiab menyuam yaus hnub nyoog qis dua 16 . Puas dua daim ntawv hla tebchaws yuav tsum muaj duab? Yog, txhua tus neeg thov yuav tsum nqa ob daim duab xim (loj 4.
