Compare este com um tom puro de
:
Converted by
Mathematica
June 22, 2001
![[Graphics:../Images/Pratica8Sol_gr_128.gif]](../Images/Pratica8Sol_gr_128.gif){kind=small}
:
:
![[Graphics:../Images/Pratica8Sol_gr_129.gif]](../Images/Pratica8Sol_gr_129.gif)
![[Graphics:../Images/Pratica8Sol_gr_130.gif]](../Images/Pratica8Sol_gr_130.gif)