Problem : Define a function by f (x) = x - 3 for x≠1 and let f (1) = 1 . At which values of x is f (x) continuous? Does f (x) have a limit at x = 1 ? If so, what is this limit?
A graph of this function is displayed below.
f (x) = - 2.
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Problem : Consider the function
f (x) =  ,
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g(x) = 
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Problem :
Compute
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 =
 =  = - 2
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