1. The problem statement, all variables and given/known data Find the derivative of the function using the definition of derivative. state the domain of the function and the derivative. f(x)= x +sqrt(x) 3. The attempt at a solution lim f(x)= [x+h+sqrt(x+h) -x -sqrt(x)]/h h-->0 limf(x)=[h + sqrt(x+h) - sqrt(x)]/h h->0 not sure how to proceed?