Linear SG review sheet, Summaries of Mathematics

Linear study sheet for review and

Typology: Summaries

2023/2024

Uploaded on 05/05/2025

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Linear
StudyGuide Pro Perp
Criteria
for
Invertibility Odistance x!toline l
Transformations xprojix xE
Iit.fi
niaiisoinotred
ftp.mitinatcs niiiiit.in
iinnoo.Rn
nentries
pervector
input
vector
has components Yrank linindcols
in aff ʰpronents if Éf rankdimicola
Ex b9
3vectorsinRZlin.in
Rhas
dim2so
basis
must
Ég
É
ftp.r
g.arequttofindTYCol
space
vs
Row
space have2linindvectors
pit EEfegtmatrix
Row
space Feine
dims
3179nutmatter planedimz
pointdime
Eigenvalues
andVectors Orthogonal Orthonormal
orthogonal
compotrowspacenullaRank
AvXROWAYnulla rattan'IPlts ecos
iÉi me inverse IE
ai iii
État
AAII RREEIIA.EEEiiisiiitistsi
like b.li
Ddiagonal entries critical
ptsinflection
peigenvectors if jpen fbial.bac
OR CBIPen
Rnvs.dim.PE
eaEf
nq
n.y
i'bastime ran complactor
aim linina
vectors
alg.mut7imesXisroot
repeated Inverse wcot
linind not
multiples
geo.mu't linindeigenvectors
itge
aEsqbeY.pt
diagonizable dimirow nonzero
rows pirotro comfy.fi
jtlA
it 70Not
invertible
citxo.aeta.es Gs aas nligi
fi
Eti
Aj
EIEitmaies
orthog
basis can
simplify
sina.nl b32 ta
pf3
pf4
pf5

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Linear

Study

Guide

Pro

Perp

Criteria

for

Invertibility

Odistance

to

line l

Transformations

x projix

x E

I

it.fi

n

iaiis

oinotred

ftp.mitinatcs

niiiiit.in

iinnoo.Rn

n

entriespervector

input

vectorhas

components

Y rank linind

cols

in

aff

pronents

if

Éf

rank

dimicola

Ex

b

3vectorsinRZlin.in

R

has dim2so

basis must

Ég

É

ftp.r

g.arequttofindT

Y Colspace vs Rowspace

have

2 linind

vectors

p

it

EE

fegtmatrix

Rowspace

Feine

dims

317 9

nutmatter

planedimz

point

dime

Eigenvaluesand

Vectors Orthogonal

Orthonormal

orthogonal

compotrowspace

nulla

Rank

A v X

ROWAY

nulla

rattan'IPlts

e cos

i

Éi

me

inverse

IE

ai

i

ii

État

A

AII

RREEIIA.EEE

i iis

iiitistsi

like

b.li

D

diagonal

entries critical

pts

inflection

p

eigenvectors

if

j

pen

fbial.ba c

OR

C

B

I

Pen

Rnvs.dim.PE

eaEf nq

n.y

i'bastime

ran

complactor

aim

linina

vectors

alg.mu

t

7imesXisroot repeated

Inverse

w

cot

linind not

multiples

geo.mu't

lin indeigen

vectors

itge

aEsq beY.pt

diagonizable

dimirow nonzerorows

pirotro

comfy.fi

jtlA

it 7 0 Not

invertible

citxo.aeta.es

Gs

a as

n

ligi

fi

Et

i

Aj

EIEitmaies

orthog

basis

cansimplify

sina.nl

b

ta

Differential

Equations

Study

Guide

Least

squares

CATAMATB

Y

ay

by

O landcoeff

y

pixly't qulygex

alt

ATAATB x̅

var of

parameters it deto

Nosolorintsol

check

Atalb

it

Iii c s

over

intention

13

a bi eaxc

cosbxCasinbx

111

RankNullity

Thm

Rank

A nullityA

mmiihffigi.fi

o

saimeouaitaminua.sn

A

mxnnicol

dima

notexactfind u

and

multiplyeau

II.EE

i

i

ig

iton

Init

can

RREF

first

y

tplx

y

qlx

y

O

red

order

9

LY

axax

Hisnnw

orthonormal

cols

rows

orthon

μÉ É

spesax

Abel

them

wit withes

p't

II

iEx

I

I

y

tay

by

fix

find

yeusingund.co

eff

Order

Linearity

Order

1

Tedx

fix

tape't

ex

y

2ndorder

tslaotitacttazle.tt

linear actsy tailtlyita.lt

y

get

m

e

got

p yc

my

first

pawonly

coett

only

7

yp

must

be

linindfromye

getonly

depends

on't

e's.in

at

y.LI

Study

Guide

Linear

Invertibility if

A

inv

inversematrex

2 2

LetEat square

dettoxt

compute

detA

then A A

I

Rree Ila

ranka

inanity

pÉÉ

Far

2

p

ui

matrix

Least

squares

linindrowsko's

1

tidett

I

Ax

bunique

x

3

find

adjla

CT

4

A

adj

a

det

a ifdet.io nosolofasa

tht.tt

sint

check

Atalb

dimrowlas

p 632

a

inconsient

mosol rowspace

rank linindrows

free var

asol

nullity

O

GS orthogonal

basis

RMRank

dim

Change

of

Basis

coordinates

az.az

u

Rn

n

entries

per

vector

Pen

bilobate

03 93

E.kz

9

v

Rank finind cols pivot

C B

I

Per

rank

dimcolA

Basis w respectto

coordinates

A

QR R

QTA

ex

b

ex.tt

fi

i'jt

j

s

Q

orthonormal

Gs

lit

vectors

inRlinind

v

vzv3lb

Rhukasalem

inb

si

vect

eigenvalues

and

vectors

ryg.IE

q

etiiYhas

iti

A

v X

Flininduectors

linindnot

multiples

ÉÉÉfÉesute.int

cg

Yaba.totindtlY

dimRow

noneerorows

It

Aa.fi

1

oex

line

dime

plane

dimz

pointdimo

P

E

p

A

PDP

1

Rank

Nullity

thm

diagonal

entries

Rankla

nullity

A

P eigenvectors

dimcolla diminula

n

null a

XI Amxnn co n

ff.ge efg

anauiopa

tatimes

colspacevRowspace

alg

mult xis

root repeated

1

col

space

geo

must

linindeigenvectorslie.inllspacer

cols w pivot

if

geo alg

notdiagonizable

maybe inv must

go

back

to

og

matrix

7

0 not inv

det

o

if

0 2

rowspace

nonzero

rows

Orthogonal

Orthonormal

orthog

comp

ofrowspace

null

A

dim

d

dimle

n

Howald

mulla

4

9ergileforor.ie

if

rows

orthonormal

EUY.ifxyIEYI.it

Study

Guide

diffequ.LY

e's'pFxia y

ay

by

fix

find

ye

y Sugix

find

yp

exiii.in

iiie

det

resonance zs

y

tay by

0 undcoff

by

checking

for

overlap

w

ye

I

yplinindfromy.is

Y.fi

istait

9tayitey

I

iii

iiiii

main

hi

mean

uz.SE

dx

Ffe

Fcz

findin factoru

Order

and

linearity

Solve

order

y

F

Smacx

Fthly

ex

y

2nd

order

Fy

N

to

find h

ly

Linear

altly

az

t

y

aolt

y g

t

integrate

to

get hly

C

y

y y

first

power

coeff

of

y

y

y

are

functions

in

terms

of

only

y

pixly qlx

y

o redorder

age

is

function

only

in

terms

of

given

y

find

yz

yiy.se

f9ax2Abel'sThm

W

x

Wixpetplxdx

Particular

Solutions

c.sn i

iis

Aesx

Ax

BX

C

es

Ae

sinyx Be

cos4x

lax'tBxC

casux

Dx Ex

F

sinux

Ax

Be

os4x extE

exsinax

Q var of

par

sec

tan