Question

Fie functia f:R=》R, f (x)=x^2-3x+1
Sa se determine numerele m €R , pentru care punctul A (m,-1) €G

Answer 1

f(m)=-1⇒m²-3m+1=-1⇔m²-3m+2=0
Δ=(-3)²-4*1*2=9-8=1>0
m₁=3+√1/2=3+1/2=4/2=2
m₂=3-√1/2=3-1/2=2/2=1

Answer 2

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