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Abstract
On the singular function for both mathematics and classical mechanics of some of the difference between the outstanding singular function for convenience. On the stress function with the process and overturned expression. Is a singular function of the number of Fourier expansion formula. Singular function in the semi-inverse elasticity in the solution of ideas and for solving differential equations plane displacement function of the basic problems in the way, and to narrow rectangular cross-section beams, the results effectively.
Keywords£ºSingular function Displacement function Elasticity Rectangular cross-section beam