Recent content by rlpp

Thank you very much, I am still a little confused but I will work with this formula. Spivak's calculus is so confusing lol.

Homework Statement Find the formula Σ[n, i =1](2i - 1) = 1+3+5+...+(2n-1) Homework Equations The Attempt at a Solution When I look at the back of the book , I got this solution which is 1, Sigma(2i - 1) = 1+3+5+...+(2n-1) 2, = 1+2+3+...+2n-2(1+..+n) 3, = ((2n)(2n+1)) /2...