Hello,

I have been usage Sage for a few months. Up to now, plotting, polynomials, and arithmetic functions have been running fine. Now I'm trying to use the symbolic calculation skills of Sage, but ...

I am getting the error : "unable to simplify to float approximation"

when running, for instance :

var('t') sin(t)

on a local-hosted jupyter notebook running the Sagemath8.3 kernel. My os is Ubuntu 18.04

Same error in pure sage :

sage: var('t') t sage: sin(t) --------------------------------------------------------------------------- TypeError

Traceback (most recent call last) <ipython-input-3-17829414d33a> in <module>() ----> 1 sin(t)/xxxxxxxxxxxxxxxxxxxxxx/lib/python2.7/site-packages/sage/symbolic/expression.pyx in sage.symbolic.expression.Expression.__float__ (build/cythonized/sage/symbolic/expression.cpp:11836)() 1426 raise 1427 except TypeError: -> 1428 raise TypeError("unable to simplify to float approximation") 1429 return ret 1430

TypeError: unable to simplify to float approximation sage: