What's the current thinking regarding derivative() and functions of a single variable? Right now, you don't need to specify a variable if the function only depends on one variable, so the following works:
sage: f(x) = x^3 + 1
sage: derivative(f)
x |--> 3*x^2
sage: f.derivative()
x |--> 3*x^2
...but I've heard that some people would like to change that, so that in
all cases it would be necessary to specify the variable. What's the
status of that?
This came up on ticket #10678, and is related to an article we're
working on. The article will be around for a while (we hope!), so if the
derivative() function is going to change, we want to know about it.
Thanks,
Dan
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--- Dan Drake
----- http://mathsci.kaist.ac.kr/~drake
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