[BUG] - θ not displayed properly on CAS screen

[Matt]

(12-27-2013 06:36 PM)Han Wrote:  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).

Do you mean diff(SIN(t),t)?
diff(SIN(t)) doesn't work - it returns 0.