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Zusammenfassung Mathematik J1/3

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In dieser Zusammenfassung, aus dem zweiten Halbjahr aus J1, habe ich anhand von Beispielaufgaben und bildlicher Veranschaulichung verschiedene Thematiken aus dem Mathematik Unterricht zusammengefasst und veranschaulicht.Durch diese sind die genannten Thematiken leicht zu verstehen und einfach zu erlernen.

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Institution
Secondary school
Study
Gymnasium
Course
School year
2

Document information

Uploaded on
January 24, 2023
Number of pages
8
Written in
2021/2022
Type
Summary

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:

, Beispiel:

Das Schaubild einer ganzrationaler Funktion 3. Grades schneidet die y-Achse im Punkt Sy(0/1), verläuft durch den Punkt P(1/ ) und hat den
Hochpunkt H(-2/5).
Bestimmen Sie den Funktionsterm.

Ansatz: ƒ(x)= ax + bx 2 + cx + d 3




ƒ(x)= 3ax + 2bx + c 2




Sy(0/1): f(0)=1: 0a+0b+0c+d=1 (1)


s
LGS
P(1/ ): f(1)= : a + b + c + d= (2)
4Unbekannte
2


H(-2/5): f(-2)=5: -8a+4b--2c+ d=5 (3)
4Gleichungen
zwei
f´(-2)=0: > 12a—4b+c =0 (4)
Möglichkeiten




Lösen das LGS aus (1): d=1 einsetzen in (2) (3) (4)

a + b + c + 1 =7
-8a + 4b — 2c + 1 = 5 In vernünftige Form (Alle Buchstaben Links / Zahlen Rechts)
12a — 4b + c = 0



a + b + c = — 2
08 • ( -12 )

-8a + 4b — 2c = 4 +


12a — 4b + c = 0 +




a + b + c = —
2

12b + 6c = 0 • ¥ ± §
-16 — 11c= 6 +




a + b + c = —
2-
12b + 6c = 0
Dreiecks
— 3c = 6
Form


Letzte Zeile: -3c = 6 I:(-3) Zeile 2 : 12b — 12 = 0 Zeile 1: a + 1 — 2 = — 2-
c = —2 12b = 12 a=£
b=1



=> Ergebnis: ƒ(x)= x + x — 2x + 1
3 2

g.
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