Chapter 1: Q. 14 (page 97)
Suppose f is a function with f(2) = 5 where for all > 0, there is some δ > 0 such that if x ∈ (2 − δ, 2) ∪ (2, 2 + δ), then f(x) ∈ (3 − , 3 + ). Sketch a possible graph of f.
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Chapter 1: Q. 14 (page 97)
Suppose f is a function with f(2) = 5 where for all > 0, there is some δ > 0 such that if x ∈ (2 − δ, 2) ∪ (2, 2 + δ), then f(x) ∈ (3 − , 3 + ). Sketch a possible graph of f.

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State what it means for a function f to be right continuous at a point x = c, in terms of the delta–epsilon definition of limit.
Use what you know about one-sided limits to prove that a function is continuous at a point if and only if it is both left and right continuous at .
Calculate each of the limits:
Sketch the graph of a function f described in Exercises 27–32, if possible. If it is not possible, explain why not.
f is left continuous at x = 2 but not continuous at x = 2, and f(2) = 3.
For each limit statement in Exercises , use algebra to find or in terms of or , according to the appropriate formal limit definition.
,findin terms of.
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