Question

y=-4x2+2x+2 resposta

Answer 1

y= -4x² +2x +2×(-1)
y= 4x² -2x -2
y= 2±√(-2)² -4.4.(-2)/2
y= 2± √4 +32/2
y= 2± √36/2
y= 2±6/2
y'= 6+2/2= 8/2= 4
y''= 6-2 = 4/2 = 2
S={4 e 2}