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Popular Functions >

range of 4-x^2

Solution

range

4 - x^{2}

Solution

f (x) \leq 4

+1

Interval Notation

(- \infty, 4]

Solution steps

Vertex of

4 - x^{2} :

Maximum

(0, 4)

For a parabola

a x^{2} + b x + c

with Vertex

(x_{v}, y_{v})

If

a < 0

the range is

f (x) \leq y_{v}

If

a > 0

the range is

f (x) \geq y_{v}

a = - 1,

Vertex

(x_{v}, y_{v}) = (0, 4)

f (x) \leq 4

Graph

Popular Examples

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symmetry y= x/(x^2+1)

line (38.7,38.24),(84.6,87.04)

inverse of f(x)=0.2x^2

domain of f(x)=(20x+99)/(x(x+11))

Frequently Asked Questions (FAQ)

What is the range of 4-x^2 ?
The range of 4-x^2 is f(x)<= 4