How to do partial fraction expansion with complex roots on a TI-89 (i.e. from formula #1 to its expansion form #2)? With real roots, I could use the Algebra/expand() function but it just returns the formula itself if there's a complex root.
- $ Z(p) = {16p \over p^2 + 4} $
- $ Z(p) = { 8 \over p + 2i } + { 8 \over p-2i} $