Welcome :: Homework Help and Answers :: Mathskey.com
Welcome to Mathskey.com Question & Answers Community. Ask any math/science homework question and receive answers from other members of the community.

13,428 questions

17,804 answers

1,438 comments

47,165 users

Math Functions Question?

+1 vote

 

What is the domain and range for x?
What is the domain and range for x^2?
What is the domain and range for sqrt.x?
What is the domain and range for x/1 (x over 1)?
What is the domain and range for |x| (absolute value function)?
asked Feb 5, 2013 in ALGEBRA 1 by futai Scholar

1 Answer

+2 votes

Domain: The domain of a function is the set of all possible input values (usually x), which allows the function formula to work.

Range: The range is the set of all possible output values (usually y), which result from using the function formula.

Algebraic function

Function Domain Range
f(x) = x (-inf , + inf) (-inf , + inf)
f(x) = x 2 (-inf , + inf) [0 , + inf)
f(x) = | x | (-inf , + inf) [0 , + inf)
f(x) = Square root ( x ) [0 , + inf) [0 , + inf)

1). y = x

2). y = x2

answered Feb 5, 2013 by richardson Scholar
edited Feb 5, 2013 by richardson

Related questions

asked Sep 5, 2014 in ALGEBRA 1 by anonymous
asked Nov 15, 2014 in PRECALCULUS by anonymous
asked Nov 12, 2014 in PRECALCULUS by anonymous
asked Nov 1, 2014 in PRECALCULUS by anonymous
...