2007/09/16 (日) 16:36:44        [qwerty]
>     卜゙卜゙卜゙卜゙卜゙卜゙卜゙卜゙
> ┝━┓
> │ ┃∫[X]j(x)m(dx)=Σ[i=1;n]αim(Ai)
> │ ┃f-(x)=Max(-f(x),0)
> │ ┃f-1 (A∩B) =f-1 (A) ∩f-1
> │ ┃df/dx=lim[⊿x→0]{f(x+⊿)-f(x)}/
> │ ┃lim[x→0](1-cos(x))/x=0
> │ ┃K={(x,y)}|0≦x≦1,0≦y≦x}