How do I use summation notation to write the series 2.2 + 6.6 + 11?

1 Answer
Sep 15, 2015

2n=0(2.2+4.4n)

Explanation:

Perhaps the biggest problem here is to recognize the arithmetic progression of the given values:

2.2

6.6=2.2+4.4

11=6.6+4.4
X=2.2+4.4+4.4

So starting with a base value of 2.2 each step increases by 4.4