Status: New
Owner: ----
Labels: Type-Enhancement Priority-Medium
New issue 3307 by [email protected]: pretty print of a derivative with
a substituted argument
http://code.google.com/p/sympy/issues/detail?id=3307
Hi,
Defining
f = symbols('f', cls=Function)
t, x = symbols('t x')
I noticed a issue with the pretty print of f'(x-t).
Indeed :
f(t).diff(t)
-> nicely pretty prints as "∂f(t)/∂t"
but :
f(t).diff(t).subs(t, x-t)
-> pretty prints is just a pretty raw display of the underlying Subs
instance :
Subs(Derivative(f(_t), _t), (_t,), (-t + x,))
while displaying f'(x-t) may be more readable.
Best,
Pierre
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