[BUG] - θ not displayed properly on CAS screen

[Han]

(12-27-2013 06:33 PM)Matt Wrote:  But only 'x' works as a CAS variable.
So if you were in the Parametric app, then went to CAS and did diff(SIN(t)) you'll get 0 rather than COS(t).

They can all be used as a CAS variable. For most CAS commands, \( x \) is the default variable where appropriate. The diff() command assumes \( x \) as the default variable of differentiation. However, diff(SIN(t),t) will work just fine (provided the variable \( t \) is used as part of the input).