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Student Support Forum: 'Mathematica 8 - Solve behave weird' topicStudent Support Forum > General > Archives > "Mathematica 8 - Solve behave weird"

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Hannes
09/12/11 10:41am

Here:
f[x_] := x^2+x+1
Solve[f[b]-2 == 0, b]
Solve[f[x]-2 == 0, x]

If I use "x", I get the 2 solutions, if I use "b" I get the empty set. I did not define b myself, so does b represent some predefined value? Just asking because this seems weird, in the Hands-on Start videos it appears to work with "b".

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Mathematica 8 - Solve behave weird Hannes 09/12/11 10:41am
Re: Mathematica 8 - Solve behave weird Forum Modera... 09/12/11 10:56am
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