Mathematics · Calculus
Let f(x) = x - [x], x > 0, where [x] denotes the greatest integer part of x. Then:
- 1f(x) is differentiable for positive integral values of x
- 2f(x) is discontinuous for nonintegral values of x
- 3f(x) is continuous for positive integral values of x
- 4f(x) is not differentiable for positive integral values of x✓
Correct answer
f(x) is not differentiable for positive integral values of x
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