# Thread: find b (multistep method?)

1. ## find b (multistep method?)

find b so that the multistep method
Y_{n+1} = 2by_{n} + (1-2b)y_{n
-1} + 2h(1-b)( f_n + f_{n-1})
Is convergent. Furthermore, find b so that LTE =o(h^2).

2. Originally Posted by alice8675309
find b so that the multistep method
Y_{n+1} = 2by_{n} + (1-2b)y_{n
-1} + 2h(1-b)( f_n + f_{n-1})
Is convergent. Furthermore, find b so that LTE =o(h^2).
Please provide more context for this question, I could guess what it is about but won't.

CB