# Revision history [back]

### a problem with variables in real domains

Hi,

I have a problem with setting the domains of definition of variables.

For example, typing

var("y") ; assume(y, "real") conjugate(y + I) I get the result y + I. The same with var("y", domain="real").

Where I'm wrong?

thanks!

### a problem with variables in real domains

Hi,

I have a problem with setting the domains of definition of variables.

For example, typing

var("y") ; assume(y, "real")
conjugate(y + I)


I get the result y + I. The same with var("y", domain="real").

Where I'm wrong?

thanks!

 3 retagged tmonteil 27023 ●30 ●196 ●508 http://wiki.sagemath.o...

### a problem with variables in real domains

Hi,

I have a problem with setting the domains of definition of variables.

For example, typing

var("y") ; assume(y, "real")
conjugate(y + I)


I get the result y + I. The same with var("y", domain="real").

Where I'm wrong?

thanks!