Daily Maths Challenges

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Share your cool maths problems.

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submitted 6 months ago by [email protected] to c/[email protected]

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Show that if a function is differentiable for an interval, it is continuous over that interval.
A function is continuous if lim_x->a f(x) = f(a)

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[–] kartoffelsaft 1 points 6 months ago (1 children)

~~Isn't the Weierstrass function a counterexample to the premise?~~ Wait no, I misread. It's the converse.

[–] [email protected] 1 points 6 months ago

i thought the "default" counter example is y=|x| lol