from numpy import cos, pi
z=cos(1/2*pi-i*pi).n(digits=15) # specify the accuracy
print "u = ",real(z) # real part
print "v = ",imag(z) # imaginary part

SageDays/Kreyszig-12.7-6 (last edited 2010-08-12 13:35:19 by msunyuma)