Math: implications from the telescoping sum
The tutor follows the idea of the telescoping sum. In my previous post, I gave an example of a telescoping sum. It implies that 1-x^(n+1)=(1-x)(1+x+x^2+x^3+x^4+…..+x^n) Dividing both sides by 1-x we arrive at (1-x^(n+1))/(1-x)=1+x+x^2+x^3+…..+x^n which is familiar from the sum …