A History of the Progress of the Calculus of Variations During the Nineteenth Century |
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arbitrary constants axis Calculus of Variations catenary chapter co-ordinates condition considered contains curvature curve Delaunay denote determined Differential Calculus differential equation double integral ds ds dv dv dv dx dv dy dx dx dx dy dz dx dz dx² dy dx dy dy dy dz dy dz dz Euler exact differential coefficient example expression formula geodesic gives indefinitely small independent variable Integral Calculus integral sign investigation involves Jacobi's Jacobi's theorem Lacroix Lagrange maxima and minima maximum or minimum memoir method minimum area minimum value notation obtain occupies pages occur Ostrogradsky partial differential equation plane Poisson problem quantities remarks respect result Sarrus second order shews solution Stegmann Strauch suppose surface theorem tion treatise triple integral vanish volume Y₁ zero бу