# Excercises 1.1

24(a)

is defined on any interval such that Clearly Then could be any interval on which e.g., or ...etc.

# Exercises 1.2

For Both functions are continuous when i.e., or Then the domain of continuity of both functions is

21.

Since belongs to the domain of continuity , then Theorem 1.1 guarantees the existence of a unique solution.

22.

Since is not in the domain of continuity, Theorem 1.1 does not guarantee the existence or the uniqueness of a solution.

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