Chance me?

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<p>If you divide the x-axis into tiny but finite bits, you will end up with a series of points and not a continuous function. If you divide the x-axis into infinitely tiny bits, then I think you will lose the concept of “triangle”. </p>

<p>Anyway, to turn a standard one-one y=f(x) function into your concept, I think it is just “angle of triangle with base at location x-dx to x+dx” = tan^-1(f(x)/dx) where dx is of course the “tiny bit”.</p>