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

1 Answer
Daniel L.
Jan 18, 2017

See explanation.

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

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