E422 -- Problematis cuiusdam geometrici prorsus singularis evolutio

(The solution of a certain altogether remarkable geometrical problem)


Eneström describes the problem in the title of E422 as follows: “Proposita recta positione data AB ejusmodi quaeritur curva AmM, ut ducta ad ejus punctum quodcunque M tangente MT rectae illi AB in T occurrente, recta TC angulum ATM bisecans eandem curvam in m normaliter trajiciat.”

According to the records, it was presented to the St. Petersburg Academy on July 4, 1771.

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