Evaluate the infinite geometric series:
32−23+827−32243+…
sumfor(n, 1, 1000, (3/2)^(3 - 2*n))==converges to 2.7
The common ratio here is r = -(2/3)2, so the infinite sum is given by (3/2)/(1 - r) = 27/26 ≈ 1.038
