- #1

- 84

- 0

ExpandAll[x] === ExpandAll[x]

x === ExpandAll[x]

Returns

True

False

The second shows me that the form an expression determines If mathematica can perform some computations. But how do I ever trust this?? Now I'm tyring to compare two vectors, that I'm almost positive are the same, but mathematica returns: False. My trick of ExpandAll doesn't work in this case either.

can someone explain why this occurs, or how to reliably compare two expressions of different forms?

Thanks