A function f(x) has a spinode (also called a horizontal cusp) at a point
if f(x) is continuous at
and

from one side while

from the other side, so the curve is continuous but the derivative is not.s



from one side while

from the other side, so the curve is continuous but the derivative is not.s
回复Comments
{commenttime}{commentauthor}
{CommentUrl}
{commentcontent}