Methodus inveniendi lineas curvas maximi minimive proprietate gaudentes, sive, Solutio problematis isoperimetrici latissimo sensu accepti
Euler's 1744 treatise on the calculus of variations, printed at Lausanne and Geneva by Bousquet & Socios, addressed to mathematicians seeking curves with maximal or minimal properties. The plates are engraved geometric diagrams of curves, tangents, and construction lines labelled with letters and figure numbers, offering a designer clean hairline arcs, lettered axes, and tidy technical plate layouts.
