Exercises 11.7: Sigma Notation

WRITING

1.  ${\displaystyle \sum _{r=1}^{10}}$

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2.  ${\displaystyle \sum _{r=1}^{10}2r}$

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3.  ${\displaystyle 2\sum _{r=1}^{10}2r}$

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4.  ${\displaystyle \sum _{r=1}^{10}(2r+1)}$

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5.  ${\displaystyle \sum _{r=1}^{2}r+1=1+1+2+1}$

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READING

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PROOFREADING

11.  ${\displaystyle \sum _{j=0}^{5}5j}$

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12.  ${\displaystyle \sum _{n-1}^{7}n}$

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