var('z')
f=function('f',z)
f=z**2+3*z;f
f(3*I+1)
var('u,v,x,y')
u=function('u',x,y)
u=x**2-y**2+3*x;u
v=function('v',x,y)
v=2*x*y+3*y;v
u(1,3)
v(1,3)

Kreyszig-665_1 (last edited 2010-12-17 06:31:09 by sarada)