Question

Find domain for the function
1/(x+2)
​

Answer 1

Answer:

Explanation:

   let y=1x+2

   the denominator of y cannot be zero as this would

   make y undefined. Equating the denominator to zero

   and solving gives the value that x cannot be

   solve x+2=0⇒x=−2←excluded value

   ⇒domain is x∈R,x≠−2

   to find the range rearrange making x the subject

   ⇒y(x+2)=1

   ⇒xy+2y=1

   ⇒xy=1−2y

   ⇒x=1−2yy

   the denominator cannot be zero

   ⇒range is y∈R,y≠0

Step-by-step explanation:

Answer 2

Hey !!!

Domain means the values of x which satisfy a given function f(x)

Here f(x) = 1/(x+2)

•°• Here x can have any value € R - {-2}

Because if x = -2 then it would become 1/0 from which is not defined