Write the following in Summation Notation...

1. 1/2 + 2/3 + 3/4 + ... 51/50
2. 2/3 + 4/9 + 8/27 + 16/81 + 32/243
3. 1/3 - 1/9 + 1/27 - 1/81 + 1/243

Thank you!

Hi,

They goofed on #1. It should end with 50/51.


Number 1
50
∑ i/(i + 1)
i = 1


Number 2

5
∑ (2/3)^i
i = 1

Number 3

5
∑ -1/(-3)^i
i = 1

I hope that helps!! :-)