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Popular >

range of-x^2+8x-7

Solution

range

- x^{2} + 8 x - 7

Solution

f (x) \leq 9

+1

Interval Notation

(- \infty, 9]

Solution steps

Vertex of

- x^{2} + 8 x - 7 :

Maximum

(4, 9)

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}) = (4, 9)

f (x) \leq 9

Popular Examples

inverse of f(x)=((x-4))/((x-2))inverse

f (x) = \frac{( x - 4 )}{( x - 2 )}

periodicity of cos(4x)periodicity

cos (4 x)

domain of sqrt(x^2-7)domain

x^{2} - 7

inverse of ln(x+3)inverse

ln (x + 3)

inverse of (2x-7)/(x+3)inverse

\frac{2 x - 7}{x + 3}

Frequently Asked Questions (FAQ)

What is the range of-x^2+8x-7 ?
The range of-x^2+8x-7 is f(x)<= 9