Question

me ajudem so com os itens E e F por favor. ❤

Answer 1

e) f(x)=(1/3).x²-(10/3)x+5 , a=1/3 , b=-10/3 e c=5
xV=-b/2a= -(-10/3)/2.(1/3) = (10/3).(3/2)=30/6 ⇒ xV=5
yV=(1/3).5²-(10/3).5+5=(25/3)-50/3+5=-25/3+5 = (-25+15)/3=-10/3
V(5,-10/3)