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Student Support Forum: 'How to simplify with user defined identity' topicStudent Support Forum > General > Archives > "How to simplify with user defined identity"

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Bill Simpson
02/03/13 9:23pm

Not a satisfying answer, but the best I can think of at the moment.

"Solve" for Coth[a h]

In[1]:= Map[a*#&,Map[1/#&,a Tanh[a h]==b Tanh[b h]]]

Out[1]= Coth[a h] == a/b Coth[b h]

Use that result as a replacement rule

In[2]:= b Coth[a h]-a Coth[b h]/.Coth[a h]->a/b Coth[b h]

Out[2]= 0

That is really no better than doing it manually. And it assumes, without checking, that a,b,h are nonzero.

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Subject (listing for 'How to simplify with user defined identity')
Author Date Posted
How to simplify with user defined identity Finite 02/03/13 03:33am
Re: How to simplify with user defined identity yehuda 02/03/13 5:38pm
Re: How to simplify with user defined identity Bill Simpson 02/03/13 9:23pm
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