Question

Fie funcția f:R->R,f(x)=x (la puterea 2) - 2x+1. Vârful parabolei asociate are coordonatele:
a) V(-2;-1) b) V(1;0) c) V(-1;-1)

Answer 1

$x^{2} -2x+1=0=>a=1\\b=-2\\c=1\\delta=b^{2} -4ac=4-4=0\\ V(\frac{-b}{2a} \frac{-delta}{4a} )=>V(1,0)=> b)$