Lin Alg2 Flashcards

(17 cards)

1
Q

Kolomnrum

A

Col(A) hur långt trappan går att göra Col(A)=rang(A)

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2
Q

Nollrum

A

Nul(A)=antal kolumner - col(A)

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3
Q

Bas

A

Linjärt oberoende i R^2 bas {x,y}

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4
Q

Standard bas

A

Standard för R^2 [x,y]=x[1,0]+y[0,1]

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5
Q

Dimention

A

dim(R^n)=n i R^3 v1=[] v2=[] dim(plan)=2

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6
Q

Determinent

A

det() varannan +- om noll triangel det=diagonalen multiplicerad ihop

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7
Q

Cramers regel

A

Xi=detAi(b)/detA

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8
Q

Egenvärdet

A

Lamda det(A-lamdaI)=0

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9
Q

Egenvektorn

A

Sätt in lamda och räkna ut x,y,z

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10
Q

Differensialekvationer

A

X(t)=C1[v1]e^lamda*t + …

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11
Q

Ortogonal

A

Vi*Vj=0

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12
Q

Ortogonalmängd

A

Span{Vi*Vj}

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13
Q

Ortonormermängd

A

Vi=1/||Vi||*Vi

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14
Q

Diognaliserbar

A

Grundmatris nollor och ettor Sätt in dina egen vektorer där ettorna är i diagonalen detta är D i A=PDP^-1

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15
Q

Minsta kvadratmetoden

A

X=(A^TA)A^Tb b=de på lika med sidan A= matrisen på andra sidan

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16
Q

Symmetrisk matris

17
Q

Avstånd