SubArea: Analyzing function behaviorLevel: AProject ID: 9000079107Source Problem: 2010001702Accepted: 1Clonable: 1Easy: 0What is the function value of the function $f$ at its local minimum? \[ f(x) = \frac{2} {\sqrt{4x - x^{2}}} \]\(1\)\(2\)\(0\)the local minimum does not exist