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Published byAriana Joyce Modified over 2 years ago

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12.5 Sigma Notation and the nth term

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Ex 1 write each expression in expanded form and then find the sum.

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Ex 2 express the series using sigma notation … … … …+ 143

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Not all sequences are arithmetic or geometric. Some sequences ar generated by product of consecutive integers. The product n(n – 1)(n – 2)…3 x 2 x 1is called n factorial and symbolized n!. Not all sequences are arithmetic or geometric. Some sequences ar generated by product of consecutive integers. The product n(n – 1)(n – 2)…3 x 2 x 1is called n factorial and symbolized n!. n! = n(n – 1)(n – 2)…1 n! = n(n – 1)(n – 2)…1 By definition 0! = 1. By definition 0! = 1.

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Ex 3 express in sigma notation.

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Ex 4 express in sigma notation

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Ex 5 Write in sigma notation … …

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