Question: Prove Theorem 2.11: If g is continuous at a and f is continuous at g(a), then the composition f g is continuous at a.

Prove Theorem 2.11: If g is continuous at a and f is continuous at g(a), then the composition f º g is continuous at a. (Hint: Write the definition of continuity for f and g separately; then combine them to form the definition of continuity for f º g.)

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