Use the formula for the sum of the first n
Chapter 5, Problem 25E(choose chapter or problem)
Problem 25E
Use the formula for the sum of the first n integers and/or the formula for the sum of a geometric sequence to evaluate the sums to write them in closed form.
Execise
a. 1 + 2 + 22 + … + 225
b. 2 + 22 + 23 + … + 226
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