Question

Hi guys, i'm busy with applied linear algebra (on Octave). I have a question that reads: Evaluate the following series\sum _{n=1}^{\infty }\:u_n isn't known explicitly but is given in terms of a recurrence relation. You should stop your summation when |u_n|<10^(-8) with u_1=0.5 and u_2=0.6. I have a couple of problems with the question. u_n grows with each iteration and thus, will never reach 10^(-8). I've come across some posts online saying that there's an error in the question. It should be 10^(8) and not (-8). Some guidance PLEASE:(