MathGroup Archive 2000

[Date Index] [Thread Index] [Author Index]

Search the Archive

I do not understand


Hello,

ySer=Series[y[t],{t,0,3}]

If I apply this rule like this
(y[t]+y'[t])/.y[t]->ySer
both y[t] and y'[t] changes appropriately

If I apply
y'[t]/.y[t]->ySer
nothing happens


Why is that?




  • Prev by Date: Mathematica Question
  • Next by Date: intro book
  • Previous by thread: Mathematica Question
  • Next by thread: intro book