JME expression simplify for algebraic formulas

[Wim Obbels]

Hi,

JME expressions do simplify '(2x + 3x)/x' to 5, but not '(2x+3x^2)/x'  to 2+3x. 

Is it possible to also do these more advanced simplifications  (and e.g. also rewrite (simple) fractions of fractions, as in 1/(1/x) -> x )?

Case at hand: I generate expressions as

    exec(op('/'),[ expression('cos(x)'), expression('1/x') ])

and get cos(x)/(1/x), but would like to get x*cos(x)

( where cos and 1/x would be variables, and thus could be other functions ...)

Wim.

[Christian Lawson-Perfect]

Factorising general polynomials would be lovely but would take a lot of hard work to do properly. It would be a nice project for a computational maths student to take on.

I have a feeling that I looked at reducing 1/(1/x) a while ago, but I can't find it in the list of built-in rules! I've added a rule a/(b/c) → (a*c)/b to the simplifyFractions rule.

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