^
x TAYLOR (e , x, 0, 4) 4 3 2 x x x ---- + ---- + ---- + x + 1 24 6 2
x + y TAYLOR (TAYLOR (e , x, 0, 2), y, 0, 2) 2 2 (y + 2 y + 2) (x + 2 x + 2) ------------------------------- 4