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-Original Message-
From: sympy@googlegroups.com On Behalf Of Oscar
Benjamin
Sent: Friday, December 27, 2019 2:00 PM
To: sympy
Subject: Re: [sympy] simplify loses derivatives
Hi Thomas,
You need to declare what is
.com
> Frohnloher Str. 6a
> 81475 Muenchen
> Germany
> Tel. +49(89)74575075
>
> -Original Message-
> From: sympy@googlegroups.com On Behalf Of Oscar
> Benjamin
> Sent: Thursday, December 26, 2019 10:12 PM
> To: sympy
> Subject: Re: [sympy] simplify loses
On 27/12/2019 09:33, thomassli...@gmail.com wrote:
Strangely enough, I get the following results:
>>> from sympy.abc import *
>>> Derivative(x,y)
Derivative(x, y)
>>> Derivative(x**2,y)
Derivative(x**2, y)
>>> Derivative(x**2,x)
Derivative(x**2, x)
>>> Derivative(sin(x),x)
Derivative(sin(x), x)
-Original Message-
From: sympy@googlegroups.com On Behalf Of Oscar
Benjamin
Sent: Thursday, December 26, 2019 10:12 PM
To: sympy
Subject: Re: [sympy] simplify loses derivatives
Can you simplify this a bit? That's a lot of code but presumably there is a
smaller part that shows the pr
Can you simplify this a bit? That's a lot of code but presumably there
is a smaller part that shows the problem. Is this it?
In [4]: simplify(Derivative(sin(x), x))
Out[4]: cos(x)
On Thu, 26 Dec 2019 at 20:05, wrote:
>
> It looks to me like “simplify” has lost all derivatives. As you might guess
