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1. Vl Ana1LinA Zahlen, Ungleichungen, Beträge, Summen- u. Produktzeichen $3.20
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1. Vl Ana1LinA Zahlen, Ungleichungen, Beträge, Summen- u. Produktzeichen

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Dies ist eine vollständige Vorlesungsmitschrift zur ersten Vorlesung des Moduls Analysis I und lineare Algebra für Ingenieurswissenschaften. In dieser Vorlesung wurden Zahlen, Ungleichungen, Beträge, Summen- und Produktzeichen thematisiert.

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  • January 26, 2023
  • 5
  • 2022/2023
  • Class notes
  • Penn-karras
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Zahlen
Natürliche Zahlen IN 9 12 3
ein
IEEE IEEE
Ganze Zahlen Z z rio e z Nu n nen
5 2 x 3 EZ
3 6
6 z 4 IE EJE
Rationale Zahlen
Brücke
Q E E si si El me In ne Minze
6 ZU 3 E Q
X 2 K X E Q siehe Logik



Er Q
TE Q e Q
brach
Dezimal 0,75 7 1,8181 18T
brichtab wirdperiodisch

oft Q
0,1101001000100001
bricht nicht
wirdEchtperiodisch
Reelle Zahlen IR x x ER alle Dezimalbräche


1 K
keine Lsg in IR


komplexe Zahlen

z B F1 E
Ungleichungen
ugh

4
Nazca.EE

, Ungleichungen in IR

I I
a b
a b b a
a kleiner b b größer a


a be a b v a b
alleinergleichb

Axiome
für Ungleichungen
At für x ER
gilt eine der Eigenschaften


x y x y x y
AZ aus X ey und y 2 folgt z transitiv

AB aus Key und asb folgt it a
ytb
AB aus x ey folgt x ta
yta
AI aus
Key and a o folgt axcay

Weitere Folgerungen


F1 falls co ist x 0

Beweis
Xc O AG Ex Ot Ex
j
Oc

FZ für ey und aco
gilt ax
ay
Beweis
X co na so 1 a o
Xy
f
faltet a
y are
ay Itax tag
ax
j ay
FB für alle IR mit x 0
gilt 0

Beweis nach A1 giltfür 0 entweder
gg
oder 0
2 Fall

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