Re: [sage-support] Re: correct derivative command returns syntax error

[Jori Mäntysalo]

On Mon, 21 Sep 2015, Simon King wrote:

What computer algebra systems (or pocket calculators) would understand
that 5x means 5*x?

Mathematica understand at least "5 x". Or at least understood in version 
4.

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Jori Mäntysalo