Question: In problems 1-3, the given function is not defined at a certain point. How should it be defined in order to make it continuous at

In problems 1-3, the given function is not defined at a certain point. How should it be defined in order to make it continuous at that points? (see example 1.)
1. f(x) = x2 - 49/x - 7
2. f(x) = 2x2 - 18/3 - x
3. g(θ) = sin θ/θ

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