Hi,
I define the following
f(psi,beta):=%e^(beta*(asin((2*psi)/%pi)-atan2(1,beta)+%pi/2))*cos(asin((2*psi)/%pi)-atan2(1,beta))
and I have issues in getting the taylor series around zero, while
considering beta a constant.
for instance
taylor(f(psi,beta),psi,0,0);
returns
(%o69)/T/
(sqrt(beta^2+1)*(beta+%i)^(%i*beta)*%e^((%pi*beta)/2)*beta)/((beta^2+1)^((%i*beta)/2)*beta^2+(beta^2+1)^((%i*beta)/2))+...
where the imaginary unit is somehow weird.
Any clue?
Sergio