\( f(x)=\sqrt{1-\sqrt{1-x^{2}}} \) (A) continuous on \( [-1,1] \) and differentiable on \( (-1,1...
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0\( f(x)=\sqrt{1-\sqrt{1-x^{2}}} \)
(A) continuous on \( [-1,1] \) and differentiable on \( (-1,1) \)
(B) continuous on \( [-1,1] \) and differentiable on
\[
(-1,0) \in(0,1)
\]
(C) continuous and differentiable on \( [-1,1] \)
(D) none of these
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