How do you find the domain of #f(x)=x^2-4x+4#?

1 Answer
Jan 18, 2017

See explanation.


Usually when you have to find the domain of a function you look for any values of #x# which would be excluded from it.

You look for those values in:

  1. Zeros of denominators in the function's formula.

  2. Values for which expressions under square root sign would be negative.

  3. Values for which expressions under #log# sign are negative.

In the given example there are no such values, therfore the domain is all real numbers #D=RR#