identifying functions

[cobrown]

IDENTIFY IF IT IS A FUNCTION:

f(x)=2 if X>1
f(x)=-1 otherwise

huh?????........

 

[pka]

Well of course it is a function, the domain is all real numbers
Ask yourself, if r is a real number can I tell what value f(r) will be?
The answer is YES! Can you see why?

 

[cobrown]

thanx

can you write it out for me and show me what you were thinking when you solved it......?

 

[stapel]

Re: thanx

can you write it out for me and show me what you were thinking when you solved it......?

There is no "solving"; there is only "checking the definition".

Please review the tutor's post, wherein the reasoning ("what [he was] thinking") is explained.

Thank you.

Eliz.