Tuesday

March 31, 2015

March 31, 2015

Posted by **Christa** on Sunday, August 14, 2011 at 9:01pm.

the square root of 25-x^2

- math -
**MathMate**, Sunday, August 14, 2011 at 10:01pmf(x)=√(25-x²)

For f(x) to be real, we require that the expression 25-x² be non-negative, i.e.

25-x²≥0 ....(1)

(1) is satisfied when

|x|≤5,

or x∈[-5,5] which is exactly the domain of f(x).

The range of f(x) varies from 0 when x=±5 to 5 when x=0.

**Answer this Question**

**Related Questions**

MAth - how do i find the domain and range of equations? example: f(x)=ab.solute ...

Math (pre-calculus) - Hey! I have a domain and range question! I don't remember ...

Calc - Find the functions a) f o g, b) g o f, c) f o f, d) g o g, and their ...

Calculus - Find the functions a) f o g, b) g o f, c) f o f, d) g o g, and their ...

Help! Math (pre-calculus) - Oy! I don't understand this! How do you calculate ...

math - how do i find the domain and range of equations? example: f(x)=ab.solute ...

math URGENT - okay i need to find the domain and range of this z(x) = x^2 - ...

Maths - How to find a range (not domain) of function f(x)=square root of x^2-1/...

math - find the restrictions on the domain and range for: y=square root of 6-2x

math - find the domain and range of the function. f(x)= square root of x+3