How would I go about formally proving that a continuous equation e.g. y=|x| is non-differentiable at a point such as x=0?
I know what it looks like graphically with a sharp edge but how would the proof look like algebraically?
Follow Math Help Forum on Facebook and Google+
Originally Posted by Plato Show that Wouldn't they both converge to 0 on both sides of the curve?
Originally Posted by Kataangel Wouldn't they both converge to 0 on both sides of the curve? Neither of those limits is zero.
View Tag Cloud