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range 4−x2
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Solution
f(x)≤4
+1
Interval Notation
(−∞,4]
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Function range definition
The set of values of the dependent variable for which a function is defined
Vertex of 4−x2:Maximum (0,4)
For a parabola ax2+bx+cwith Vertex (xv,yv) If a<0the range is f(x)≤yv If a>0the range is f(x)≥yv a=−1,Vertex (xv,yv)=(0,4)
