AN EXAMPLE USING OPERATOR NOTATION

THE DIFFERENTIAL EQUATION

d2y/dx - dy/dx - 6y = 0

CAN BE WRITTEN IN OPERATOR NOTATION

(D2 - D - 6)y = 0

SYMBOLIC "FACTORING”, (D - 3)(D + 2)y = 0,

YIELDS THE TWO ROOTS, 3,-2

AND THEREFORE THE SOLUTION:

y = A1e3x + A2e-2x

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