Massachusetts Institute of Technology: Srini Devadas and Eric Lehman's "Sums, Approximations, and Asymptotics II"

Read Section 2 "The Factorial Function." The reading also applies to the Subunit 4.4.1 and Subunit 4.4.2. In reading for Subunit 4.4.2, below, see the binomial theorem and its generalization to the multinomial theorem.

Note the first ten factorials: 10! 9! 8! 7! 6! 5! 4! 3! 2! 1! = 101 x 92 x 83 x 74 x 65 x 56 x 47 x 38 x 29 x 110.

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