RE: Re: [sympy] Suggestion on Derivative and Expr._diff_wrt

Sat, 04 Jan 2020 07:28:12 -0800

Why don’t you use the chain rule (d f(x) / dx) * (dx/d(x+1)). For first order derivative you can use the reciprocal therefore dx/d(x+1) = 1/(d(x+1)/dx).

 

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From: David Bailey
Sent: 04 January 2020 16:36
To: [email protected]
Subject: Re: [sympy] Suggestion on Derivative and Expr._diff_wrt

 

On 04/01/2020 10:08, Francesco Bonazzi wrote:

It's suggest to subclass Derivative if this feature is needed. 
 

I'd like to know what d f(x)/d(x+1) means exactly. It isn't too easy to GOOGLE.

David

 

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