Recent content by GeorgeGreen

What is acceptable summation notation for a binomial expansion of, for example (1+x)^n, from the zeroth to the (n-1)th term? For example a possible expansion maybe (1+x)^4, where by I would like to write in summation notation that the expansion would be : 1 + 4x + 6(x^2) 4(x^3) . Notice...