Given:
for x=-4 and x=4, find value of f(x) if f(x) is piecewise defined as follows:
f(x)=x² if x≤-4, and ..........(1)
f(x)=sqrt(x) if x>1...............................(2)
f(-4)=x ² =(-4)^2= +4*4=+16 [ from (1) ]
f(4)=sqrt(x) =sqrt(4) = 2 [ from (2) ]
