Question

Find the domain and range of the function y = f(x) = r2.=Domain:help (inequalities)Range:help (inequalities)

Answer 1

we have the function

y=f(x)=x^2

the domain is all real numbers -------> interval (-∞, +∞)

the vertex of the vertical parabola is the origin (0,0)

the parabola opens upward

the vertex is a minimum

so

the range is the interval [0, ∞)