Pomax / BezierInfo-2

The development repo for the Primer on Bézier curves, https://pomax.github.io/bezierinfo
https://pomax.github.io/bezierinfo
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Error in the equations for inflections? #314

Open cerjones opened 2 years ago

cerjones commented 2 years ago

In the section "Curve Inflections", and then in "Lets derive the full formula anyway". The 5th term in the full formula is

-54 t^2 x3 * y2

But when the formula is simplified due to being aligned, that 5th term becomes the first term of the simplified formula, but it's sign is flipped.

3 x3 y2

I think the signs should be the same.