#6756: [with patch, needs review] Implement ``diff`` format symbolic derivative
in
new symbolics
----------------------------+-----------------------------------------------
Reporter: gmhossain | Owner:
Type: enhancement | Status: new
Priority: major | Milestone:
Component: symbolics | Keywords:
Reviewer: Nick Alexander | Author: Golam Mortuza Hossain
Merged: |
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Comment(by gmhossain):
Replying to [comment:12 burcin]:
> Replying to [comment:11 gmhossain]:
> For example. consider the substitution: f(y,y) = y
>
> This substitution doesn't make sense mathematically.
Hmm, if you bring mathematical sense into argument then does it
make mathematical sense asking for applying chain rule at the
first place for this case?
> Note that with these patches, the result of `f(y,y).diff(y)` is twice
that of the current implementation.
This is not accurate.
Above will happen only when an user wants to apply chain rule by
explicitly setting
diff_derivative_level to "2" or more and certainly NOT in default diff
level of "1".
If some user wants to use some setting that are not default then its
reasonable to
expect users to read the documentation to be aware of the assumptions
associated with
the settings.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6756#comment:13>
Sage <http://sagemath.org/>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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