if you multiply two summation notation ex. (summation (x)) *(summation(y)) do you get (sumation (xy)) ??
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Hello, Originally Posted by pandakrap if you multiply two summation notation ex. (summation (x)) *(summation(y)) do you get (sumation (xy)) ?? Is equal to ?
no. it = ac + cd + ad + bd
Originally Posted by pandakrap no. it = ac + cd + ad + bd So try : is equal to ? And hence is your formula correct ? You can see here : Cauchy product - Wikipedia, the free encyclopedia for the formula of the product of two summations
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