What is the domain of f(x)=\rt4−x2f(x) = \rt{4 - x^2}f(x)=\rt4−x2?
[−2,2][-2, 2][−2,2]
−2\qx\q2-2 \q x \q 2−2\qx\q2
x\q2x \q 2x\q2
Both a and b