There is a local maximum at the point (-1,6), therefore, for x = -1
A function is a mathematical statement that builds relation between a dependent and an independent variable.
The value of x and y is
x y
-4 16
-3 -2
-2 0
-1 6
0 0
1 -2
Near a maxima on either side , the value is smaller than the maxima
The function has smaller values than 6 to the left of x = -1, and to the right of it:
Value of function to the left of the maxima
(-3, -2), (-2, 0)
Value of function to the right of the maxima
(0, 0), and (1, -2)
therefore, (-1, 6) is a maximum, for x = -1.
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