f(x)=cos x に対して

RowBox[{Cell[TextData[Cell[BoxData[f ' (x) = -sin x ]]]], ,, Cell[TextData[Cell[BoxData[f'' (x) = -cos x ]]]]}]

だから

Cell[TextData[{Cell[BoxData[f(0) = 1, f ' (0) = 0 ]], , f''(0)=-1 }]]

よって

y = F_2(x) = (f'' (0))/2 ! x^2 + (f ' (0))/1 ! x + f(0) = -1/2x^2 + 1

Created by Mathematica  (May 17, 2005) Valid XHTML 1.1!