Свойства функции: 1) y=0.5x^2-2 2)y=x^2-4x+4 3)y=-x^2+2x

Question

Свойства функции:
1) y=0.5x^2-2
2)y=x^2-4x+4
3)y=-x^2+2x

Answer 1

1
у = 0
0.5х^2 -2=0
0.5x^2= 2
x^2 = 2:0.5
x = √4
x = 2

2. y = 0
x^2 - 4x+4 = 0
D = 16 - 16 = 0
x = 4 : 2 = 2

3. у = 0
- х^2+2x = 0
-x(x - 2) = 0
x - 2 = 0
x = 2