For a great explanation of how integral relates to summing the product of infinitely many terms, see: http://betterexplained.com/articles/a-calculus-analogy-int

For a great explanation of how integral relates to summing the product of infinitely many terms, see: http://betterexplained.com/articles/a-calculus-analogy-integrals-as-multiplication/ http://betterexplained.com/articles/a-calculus-analogy-integ...