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Is the function f defined by f(x) = {{...

Is the function f defined by
`f(x) = {{:(x," if "x le 1),(3," if "x gt 1):}`
continuous at `x= 0 ?` At `x=1?` At ` x=2?`.

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The correct Answer is:
f is continuous at x=0 and x=2; not continuous at x=1.
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