(a) The differential equation x 4 y'' + y = 0 has an irregular singular point at...

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(a) The differential equation x4y'' + λy = 0 has an irregular singular point at x = 0. Show that the substitution t = 1 x yields the DE

d'y, 2 dy + Ay = 0, + dt? t dt


which now has a regular singular point at t = 0.

(b) Use the method of this section to find two series solutions of the second equation in part (a) about the regular singular point t = 0.

(c) Express each series solution of the original equation in terms of elementary functions.

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