(1) Numerical analysis does not really fit into this forum section.

(2)Not sure what this means. Are you asking if you can see the pattern?we cant see what is the pattern of finding s?

(3)is a root of the function . There are three roots, denoted by , and .what s represents?

(4)It is assumed that , and . Let . If , then we set = and . Otherwise, we set and . This way, converges to one of the roots as .n iteration 0 s is found by sum of an and bn