Nullstellen bestimmen üben

Einfache Übung

Berechne die Nullstelle der Funktion f(x)

f(x)=2x+5

f(x)=3x+7

f(x)=5x+10

f(x)=4x+8

f(x)=7x+3

Berechne die Nullstelle der Funktion f(x)

f(x)=(2/5)*x+12

f(x)=(1/10)*x-8

f(x)=(1/3)*x+5

f(x)=(2/5)*x-3

f(x)=(1/4)*x+2=

Berechne die Nullstelle der Funktion f(x)

f(x)=-(1/5)*x+2/3

f(x)=(2/3)*x-5/4=

f(x)=-(1/8)*x+12/25

f(x)=-(2/7)*x-7/5

f(x)=(3/11)*x-3/2

_{*Lösungen ganz unten auf dieser Seite.}

Rechenwege und Musterlösungen

f(x) = 2x + 5, Setze f(x) = 0 <=> 2x + 5 = 0 <=> 2x=-5 <=> x = -2,5 → Nullstelle
f(x) = 3x + 7, Setze f(x) = 0 <=> 3x + 7 = 0 <=> 3x=-7 <=> x = -7/3 → Nullstelle
f(x) = 5x + 10, Setze f(x) = 0 <=> 5x + 10 = 0 <=> 5x = -10 <=> x=-2 → Nullstelle
f(x) = 4x + 8, Setze f(x) = 0 <=> 4x + 8 = 0 <=> 4x = -8 <=> x = -2 → Nullstelle
f(x) = 7x + 3, Setze f(x) = 0 <=> 7x + 3 = 07x = -3x = -3/7 → Nullstelle

f(x) = (2/5)x + 12, Setze f(x) = 0 <=> (2/5)x + 12 = 0 <=> (2/5)x = -12 <=> x = -30 → Nullstelle
f(x) = (1/10)x – 8, Setze f(x) = 0 <=> (1/10)x – 8 = 0 <=> (1/10)x = 8 <=> x = 80 → Nullstelle
f(x) = (1/3)x + 5, Setze f(x) = 0 <=> (1/3)x + 5 = 0 <=> (1/3)x = -5 <=> x = -15 → Nullstelle
f(x) = (2/5)x – 3, Setze f(x) = 0 <=> (2/5)x – 3 = 0 <=> (2/5)x = 3 <=> x = 7,5 → Nullstelle
f(x) = (1/4)x + 2, Setze f(x) = 0 <=> (1/4)x + 2 = 0 <=> (1/4)x = -2 <=>x = -8 → Nullstelle

f(x) = -(1/5)x + 2/3, Setze f(x) = 0 <=> -(1/5)x + 2/3 = 0 <=> -(1/5)x = -2/3 <=> x = 10/3 → Nullstelle
f(x) = 2/3x – 5/4, Setze f(x) = 0 <=> (2/3)x – 5/4=0 <=> (2/3)x = 5/4 <=> x = 15/8 → Nullstelle
f(x) = -(1/8)x + 12/25, Setze f(x) = 0 <=> (-1/8)x + 12/25 = 0 <=> (-1/8)x = -12/25 <=> x = 96/25 → Nullstelle
f(x) = -(2/7)x – 7/5, Setze f(x) = 0 <=> -(2/7)x – 7/5 = 0 <=> -(2/7)x = 7/5 <=> x = -49/10 → Nullstelle
f(x) = (3/11)x – 3/2, Setze f(x) = 0 <=> (3/11)x – 3/2 = 0 <=> (3/11)x = 3/2 <=>x = 11/2 → Nullstelle