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26. Vl Ana1LinA Elementare Funktionen 2

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Dies ist eine vollständige Vorlesungsmitschrift zur 26. Vorlesung des Moduls Analysis I und lineare Algebra für Ingenieurswissenschaften. In der Vorlesung werden weitere elementare Funktionen erklärt. Dafür werden reelle und komplexe Exponentialfunktionen, Potenzfunktionen und Logarithmusfunktionen vorgestellt. Andere elementare Funktionen werden in der 6. und der 27. Vl. vorgestellt.

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Uploaded on
February 1, 2023
Number of pages
6
Written in
2022/2023
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Exponentialfunktion

Exponentialfunktion explx ZEIT Et t
YingE E
konvergent füralle ER
Zahl Gig E
Eulersche e exple
ex 2,7182818

wir verwenden vorläufig nicht exp x et
Wirzeigen mit der Definition von exp die
üblichen Rechenregeln derExponentialfunktion

1 exp istdiffbar mitlexplx exp x

2 exp o 1

3 Kp x tx exp n exple
4 exp f expI
5 0
exp x
6 exp ist streng monaten wachsend
7 Eignet D exp wächstschneller alsjedePotenz



zu 1 exp x Et Et
oft
f HEHEHE E Begründung hierfür später
i

TEE EF E.EE
i i
Et
E t EI t exp x



zu 3 expflexplxzt dt Er t letztEI t
1 X tx E t EI E SITE
7
1 1 2 Ätzte 3 2
6
3 x xp
Tt Katz t Ei t t t
explain

, zu 4 explx expt expft x explott explet F
za 5 exp x 0

angenommen exp A TO expo 1 0

Dann würde da exp diffbar also auchstetig laut Zwischenwertsatz
eine Nsf existieren

aber_ exp x O

explx O füralle ER
zu 6 lexplx exp x 0 wächststreng monoton



zu 7 expltät Et Et EI
ei Einü
zu 8 E expktEs_expI



natürliche Logarithmus
funktion


exp IR 30,0T bijektiv Umkehrfunktion lu JO.ME IR




explend x x so lnlexplx x
für ER

Eigenschaften des Logarithmus
1 In x x en x ten Ix
2 In 11 0
3 In end
4 In E enkel ent

5 en Joint IR bijektiv
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