1.

Let `g(x) = f(f(x))` where `f(x) = { 1 + x ; 0

Answer» Correct Answer - C
f(x) is discontinuous at x = 2,
So, f(f(x)) may be discontinuous when `1+x=2` (when `0le xle2)` or `3-x=2` (when `2 lt xle3`).
`therefore" "x=1`
Hence f(f(x)) is discontinuous at x = 1 and x = 2.


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