Find a function which is continuous at $x = 3$ and not differentiable at $x = 3$.
Added by Daniel F.
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This means that the limit of the function as x approaches 3 must exist and be equal to the value of the function at x = 3. One example of such a function is f(x) = x^2. The limit of f(x) as x approaches 3 is 9, and f(3) is also 9, so the function is continuous at Show more…
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