Solve vs Reduce
- To: mathgroup at smc.vnet.net
- Subject: [mg94627] Solve vs Reduce
- From: "Jaccard Florian" <Florian.Jaccard at he-arc.ch>
- Date: Thu, 18 Dec 2008 07:20:34 -0500 (EST)
Hello!
I have the following system :
In[1]:= equations = {5/(x + y) == 2/y, Dt[5/(x + y) == 2/y, =
t], Dt[x, t]
== 1, x == 5}
As you can see, Solve manages very well to find Dt[y,t] :
In[2]:= Solve[equations, Dt[y, t]]
Out[2]= {{Dt[y, t] -> 2/3}}
Why isn't Reduce able to find the solution?
In[3]:= Reduce[equations, Dt[y, t]]
Out[3]= False
Regards, and thanks to all who will answer!
Florian Jaccard
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