Question

In the following exercises, write each sum using summation notation. $\frac{1}{3}+\frac{1}{9}+\frac{1}{27}+\frac{1}{81}+\frac{1}{243}$

   In the following exercises, write each sum using summation notation.
$\frac{1}{3}+\frac{1}{9}+\frac{1}{27}+\frac{1}{81}+\frac{1}{243}$
Intermediate Algebra
Intermediate Algebra
Lynn Marecek 1st Edition
Chapter 12, Problem 61 ↓
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In the following exercises, write each sum using summation notation. $\frac{1}{3}+\frac{1}{9}+\frac{1}{27}+\frac{1}{81}+\frac{1}{243}$
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00:01 We're going to write the sum using our summation notation.
00:05 So first we need to figure out if we have a counter as we go from one term to another.
00:12 There's definitely ones on top, so it'll just stay a one.
00:15 But notice that we have a three to the first, a three to the second, a three to the third, a three to the fourth, and a three to the fifth...
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