Forgot password? New user? Sign up

Existing user? Log in

Consider the sum:

$S = 1 + 2(1-x) + 3(1-x)(1-2x) + n(1-x)(1-2x)...(1-(n-1)x)$

If $S$ can be written as:

$S = \dfrac{1}{x} \left[1-(1-a_1x)(1-a_2x)(1-a_3x)\cdots(1-a_nx) \right]$

Find : $\displaystyle \sum_{i=1}^n a_i$

Problem Loading...

Note Loading...

Set Loading...