Hallo, Frank Barknecht hat gesagt: // Frank Barknecht wrote:
1*z^2 - fb1*z^1 - fb2 = 0
zb = (-fb1 +- sqrt(fb1*fb1 - 4*fb2)) / 2
Sorry, the one above is wrong, of course. Given the minus-signs in the original transfer formula it should be:
zb = (fb1 +- sqrt(fb1*fb1 + 4*fb2)) / 2
if I'm right.
Frank