Mathematics · Calculus
Which of the following is a necessary (but not sufficient) condition for a real-valued function f(x) to be continuous at a point x = c?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1f(x) must be equal to 0 at all x
- 2f(x) must be defined at x = c✓
- 3f(x) must not be equal to f(c)
- 4f(x) must be differentiable at x = c
Correct answer
f(x) must be defined at x = c
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