#6956: [with patch, needs work] cannot differentiate cotangent
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Reporter: burcin | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-4.1.2
Component: symbolics | Keywords:
Reviewer: Burcin Erocal | Author: Tim Joseph Dumol
Merged: |
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Comment(by timdumol):
Functions that inherit from `PrimitiveFunction` are automatically given
`nargs = 1` on L800 of `symbolic/function.pyx`. So the silent dropping of
arguments is more of a usability problem on the Symbolic side.
I've made the changes for the derivatives of `asech(x)` and `acsch(x)`.
I've also generalized the derivatives for `asec(x)` and `acsc(x)`.
Anyone who wants to review the derivatives can check:
http://mathworld.wolfram.com/Derivative.html,
http://mathworld.wolfram.com/InverseHyperbolicFunctions.html and
http://mathworld.wolfram.com/InverseTrigonometricFunctions.html
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6956#comment:3>
Sage <http://sagemath.org/>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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