Find the vertices of α(t) = 1 - 2 cos(t)(adsbygoogle = window.adsbygoogle || []).push({});

I know that to find the vertices we have to set the curvature equal to zero.

Curvature = ||α'(t) x α''(t)|| / (||α'(t)||^3)

I know the first and second derivative of α. But I feel like im missing something. Should I do a step before taking the derivatives.

Thanks

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# Differential Geomtery. Find the vertices the equation

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