Question

Which function's domain consists of all real numbers except -2?

Answer 1

f(x) = 1 / x + 2 ,

Here function f(x) is defined for all real numbers [means if you put any real number in the given function , you get a unique Y- value , So function is defined for all real values EXCEPT x = -2 ,
If you put x = -2 in given function ,we get 1 / 0 ( Infinity ) which is not a Real number.]

Domain is the set all X-Values...So Here Domain will be R - {2}.

Hope this help.....