How to send (import) any sage variable back to other software in Sage e.g. Maxima or R

[Jozef Hanč]

Probably a simple task.

Environment: cocalc sage worksheet

PROBLEM 

Background) It seems that I understand how to send a variable from e.g. Maxima mode (%maxima) to Sage mode.

e.g. using this code in CoCalc:

-------Maxima mode---------------

%maxima

x=2

-------Sage mode-------------------

y=maxima('x')

So the value 2  of x variable defined in Maxima appears as a value of y variable in Sage.

Problem statement) However, I am not able to do a reverse.

I have no idea how to send a variable from Sage to Maxima.

Any advice, link or comment?

[Dima Pasechnik]

it is not clear what you mean by "sending a variable"

What are you trying to achieve?

[kcrisman]

Just in general, you should be able to do

f = stuff

y = maxima(f)

z = y._sage_() # or maybe sage(y)

[Nils Bruin]

Furthermore, results transferred to interfaces are assigned to variables

sage: U=maxima(sin(x))
sage: U.name()
'sage4'
sage: maxima('sage4')
sin(_SAGE_VAR_x)