Prove that f(x) is continuous at a if and only if limh→0f(a+h)=f(a).
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Lesson Parent:
Problem:
Prove that f(x) is continuous at a if and only if limh→0f(a+h)=f(a).
Answer:
It is true that f(x) is continuous at a if and only if limh→0f(a+h)=f(a).