Regardless of the mode, you can always convert from a symbolic or fractional answer to a numeric answer by pressing Diamond then ENTER.
e = e1 Hence 0 element is unique.
(U1): ∀λ∈F:∀x,y∈G: λ∘(x+Gy)=λ∘x+Gλ∘y
Presentations with Mathematica
Mathematica’s unified computation and dynamic document architecture makes possible a new level of interactive presentation—notably allowing finished “slides” on which full interactive input and dynamic computation can still be done. Mathematica’s cell-structured documents also conveniently allow calculations leading up to graphics or other elements to be maintained in the underlying document, but hidden for presentation.