Question

Calcule as coordenadas do vértice da função y = x² - 2x - 1;

Answer 1

y=x²-2x-1=ax²+bx+c ....a=1,b=-2  e c=-1

Vx=-b/2a=-(-2)/2=1

vy=-Δ/4a= -[4-4*1*(-1]/4= -8/4=-2