Given the function f (x) = x2 + ax + 2, find the function analytic formula of the minimum value g (a) of function f (x) in the interval [- 2,2], and get the And find the maximum value of G (a)

F (x) is a quadratic function. If the opening is known to be upward, we only need to discuss the axis of symmetry
The axis of symmetry is x = - A / 2
1 when - A / 24
Take the minimum value when x = - 2
That is, f (x) min = f (- 2) = 6-2a
2 Dang - 2

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