E21 -- Quamodo data quacunque curva inveniri oporteat aliam quae cum data quodammodo iuncta ad tautochronismum producendum sit idonea

(For some given curve, it is required to find another curve joined in a certain way with that given, which is suitable for producing a tautochrone curve)


According to the records, it was presented to the St. Petersburg Academy on March 7, 1732.

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