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Question: symbolic computation after using SOLVE()

Question:symbolic computation after using SOLVE()

jean-jacques 39 Maple
computation symbolic value
December 02 2010
1

Hello,

I want to use the values of the solutions of

sol := solve({x+y=a, x-y=b}, {x,y});

I would like to be able to continue some symbolic computationg, for example

 

dernier:= sol[1]/sol[2];

 

but I get an error message.

 

How can I take only the values of x (and not the expression x= something) to compute, for example "dernier"?

 

Thanks in advance,

 

Jean-Jacques
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