Posted by **coried** on Tuesday, August 18, 2009 at 12:56pm.

What is the domain of the function f(x)=sqrt(x^4-16)? In interval notation. Please show me how to work this problem out. I cannot find any examples in my book. Thanks!

- Algebra -
**Marth**, Tuesday, August 18, 2009 at 1:03pm
You cannot take the square root of a negative. So f(x) is defined when the contents of the square root are greater than or equal to 0.

x^4 - 16 >= 0

x >= ? and x <= ?

- Algebra -
**Marth**, Tuesday, August 18, 2009 at 1:05pm
Interval notation expresses an included endpoint (greater than or equal) with a "[]" and a not included endpoint (greater than) with a "()"

For example, if the domain of x is -2 < x <= 3, then interval notation would be (-2,3].

## Answer This Question

## Related Questions

- Algebra - Find the domain of the function. (Write your answer using interval ...
- algebra - Graph the following function using the technique of shifting, ...
- college algebra - For the given functions f and g find the following and state ...
- calculus - Find the derivative of the function using the definition of ...
- college algebra - for the given function f&g, find the following and state the ...
- Algebra - Find the domain of the function. Write in interval notation. sqrt(x^2...
- Trigonometry - In this problem, you will describe in detail how we arrive at the...
- Algebra - Hello again, I am now working on trying to find the relation of x = 1...
- calculus - find the domain of the following function. State your answer in ...
- Calculus - I need help with this problem: Let f(x)= sqrt(x-3) and g(x)=(x^2)+1 a...

More Related Questions