Asked by m

Find the range of the Quadratic Function f(x) = x^2 + 2x -1 if -2<x<=3.
Answered by Cheerios!?
x=1±√7
Answered by oobleck
f(x) = (x+1)^2 - 2
so the vertex is at (-1,-2)
f(3) = 14
so the range is the interval [-2,14]
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