Section 11.1 Sequences and Summation Notation
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Example 2: Using a Recursion Formula
A recursion formula defines the nth term of a sequence as a function of the previous term.
Evaluating Fractions with Factorials
When evaluating fractions with factorials in the numerator and the denominator, try to reduce the fraction before performing the multiplications. For example 26!/21!, rather than write out 26! as the product of all integers from 26 down to 1, 26! can be expressed as.....(see image)
