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Write the series as a summation in Sigma Notation?
The integers between 10 and 99, inclusive
I forgot to mention that under the sigma notation is k=0. I see the answers given have either j=10 or i=10 but it needs to be 0...
5 Answers
- PuzzlingLv 73 months ago
Write down the terms. You are directed to start with the "zeroth" term (k=0):
a[0] = 10
a[1] = 11
a[2] = 12
...
a[89] = 99
In general, we can describe a term as:
a[k] = 10+k
We simply need to go from 0 to 89, adding that term (10+k)
89
∑ ... 10+k
k=0
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