Home  18.013A  Chapter 2  Section 2.1 


A series expansion of a function about an argument ${x}_{0}$ is an expression of the form
that can go on forever. These are amazingly useful.
The condition that $\mathrm{exp}x$ is its own derivative gives relationships between the coefficients, $A,B,C,\dots $ that allow you to deduce what they all are quickly, given $A$ .

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