Problema Solution
Please help me to find the domain of the function
f(x)=sqrt(5x-20).
Thanks
Answer provided by our tutors
f(x)=sqrt(5x-20).
Domain is the set of x values for which f(x) valid.
f(x) is valid if 5x-20>0.
5x>20.
x>20/5.
x>4.
Domain D=(x/x>4).