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October 20, 2014

October 20, 2014

Posted by **Anonymous** on Wednesday, April 10, 2013 at 9:35am.

Write the series in sigma notation.

1/4 + 1/2+ 3/4 + 1 + 5/4 + 3/2

5

A.) 1/4 sigma N

n=1

6

B.) 1/4 sigma n

n=1

5

C.)sigma n/n+3

n=1

6

D.)sigma n/n+3

n=1

- math -
**Reiny**, Wednesday, April 10, 2013 at 10:46amrewrite it as:

1/4 + 1/2+ 3/4 + 1 + 5/4 + 3/2

= 1/4 + 2/4 + 3/4 + 4/4 + 5/4+ 6/4

= (1/4)(1+2+3+4+5+6)

so I see 6 terms of natural numbers

= (1/4)∑ n , with n=1 below the ∑ sign, and 6 above it

looks like choice B is the one.

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