The maximum value of function y = - 2x + 1 in the interval [- 2,2] is the minimum value

The maximum value of function y = - 2x + 1 in the interval [- 2,2] is the minimum value

The maximum value of the function y = - 2x + 1 in the interval [- 2,2] is 5 and the minimum value is - 3
x=-2, y=5
x=2, y=-3

If x > 2, when x=____ The minimum value of the function y = 2x-5 + 1 / X-2 is

y=2x-5+1/x-2
=2（x-2）＋1/（x-2）-1
≥ 2 root 2 - 1
When
2（x-2）=1/（x-2）
2（x-2）²=1
x-2=√2/2
That is, when x = 2 + [√ 2 / 2], the minimum value is 2 root sign 2-1

Given the square of the function ax - 2x + 3, in the closed interval 1 to 4, find the maximum and minimum of the function

When a > 0, if 1 / a ≤ 1, f (x) max = f (4) =... F (x) min = f (1) =... If 1 / a ≥ 4, f (x) max = f (1) =... F (x) min = f (4) =... If 5 / 2 ≥ 1 / a ≥ 1, f (x) max = f (4) =... F (x) min = f (1 / a) =... If 4 ≥ 1 / a ≥ 5 / 2F (x) max = f (1) =