For comparison with other CAS choose from: Axiom Macsyma Maple Mathematica Reduce
taylor (#e ^x, x, 0, 4)
x
TAYLOR (e , x, 0, 4)
4 3 2
x x x
---- + ---- + ---- + x + 1
24 6 2
taylor(taylor(#e^(x+y), x, 0, 2), y, 0, 2)
x + y
TAYLOR (TAYLOR (e , x, 0, 2), y, 0, 2)
2 2
(y + 2 y + 2) (x + 2 x + 2)
-------------------------------
4