Use sigma notation for expression

  • Thread starter synergix
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  • #1
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1. The problem statement, all variables and given/nknown data
Find a formula for the expression. Use sigma notation.
(x + 1/y)n

The Attempt at a Solution



Not sure how to do this we have only dealt with sigma notation involving only n as a variable
 

Answers and Replies

  • #2
dx
Homework Helper
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Use the binomial theorem to expand the expression.

Not sure how to do this we have only dealt with sigma notation involving only n as a variable

Example:

[tex] \sum_{n=1}^{5} x^n = x + x^2 + x^3 + x^4 + x^5 [/tex]​

Notice that although x is a variable, it does not vary from term to term. The only thing that varies from term to term is the exponent. Your problem is similar.
 

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