Fourier, Jean Baptiste Joseph, baron, 1768-1830 · Cambridge [Eng.] : University Press · leaf 233
emonstrations have been supplied by Poisson, Deflers, Dirichlet, Dirksen,Bessel, Hamilton, Boole, De Morgan, Stokes. See note, pp. 208, 209. [A. F.] 200 THEORY OF HEAT. [CHAP. IJI. interval equal to STT on the axis of the abscissae. Further, each ofthese arcs is composed of two symmetrical… … If a series be required of the form a + b cos x + c cos 2% + d cos 3x -f &c., such that, substituting for x any value whatever X included between 0 and TT, we find for the value of the series that of theordinate X<j>, it is easy to solve the problem : for the coefficientsgiven by the…
Heat
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