eval command problem - MaplePrimes

Question:eval command problem

Posted: sinat 10 Product: Maple 13

August 15 2012

hi guys,

say i have an expression like this:

and i want to replace the term $sqrt(B[x1]^2+B[y1]^2)$ with a variable like $d[1]$ so i use the eval command

but the output wont do anything good and returns the same EE as before. am i doing it wrong??

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