# How do you find the domain and range of F (X) = sqrt(x-3) ?

Jun 24, 2015

Domain is : <3;+oo)
Range: <0;+oo)
To find the domain you have to chech for which number all the operations in function formula are defined. In this case the limit is that: $x - 3 \ge 0$ because you cannot calculate the square root of a negative number (it exists but is not a real number).