For what value of λ is the function defined by
(2
2 ), if
0
( )
4
1,
if
0
x
x
x
f x
x
x
λ
−
≤
= 
+
>

continuous at x = 0 What about continuity at x = 1 19 Show that the function defined by g (x) = x – [x] is discontinuous at all integral
points