The book On the Functions of the Parabolic Cylinder was written by author David I Epstein Here you can read free online of On the Functions of the Parabolic Cylinder book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is On the Functions of the Parabolic Cylinder a good or bad book?
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19) \^rK) t). V. I(Y>{) for V = - X- + i^-, X real and tending to +oo. For X -s> oo. , -1 nX fX. In ^. L/2. Ix(Y«)^-l/2-ix(M> ^ 2" exp^- | log X . ^ - ^r^rU *V (2. 20) i(^-X* (^)^/^(4 *^)) I • The corresponding expression for X ->-oo can be obtained by putting X » -t and letting t -> +oo, or by interchanging ^ and vi and letting \. ->oo as above. 3, Special one-valued solutions Before entering upon a discussion of the addition theorems it will be of some value to remark on the equation of one-v...aluedness. From the transformation (2, 3) we see that a point in the (x, y)-5ystem has two pairs of coordinates in the (^, y^ ) -system, namely (C>>1 ) and i-E, f-^)» Thus, to say that the function F(4, >y ) is one-valued in the (x, y)-plane means that F(^, >7) » F(-C, -v]). Therefore, a product fj^(YC)f2(Y">7) is a one-valued function in the (x, y)-plane if and only if the functions f and fp are both even or both odd. Given f, (Y?) and f2(Y^)» then clearly - 9 - (3. 1) f^(Y4)f2(Y^) + f^i-r^)f^i'ryi) is a one-valued solution of the wave equation, although one in which the variables are not completely separated.
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