On 01/20/2014 09:31 AM, Alasdair wrote:
> My input:
>
> f:=operator 'f
>> y:=operator 'y
>> kxy:=eval(D(f(x,z),[x,z]),z=y(x)) -- <- thanks to Waldek for this idea
>>
>
> The output:
>
> f[,1,2](%A,y(x))
In fact, I cannot reproduce your output. Can you give a complete session?
Ralf
(6) -> )clear completely
All user variables and function definitions have been cleared.
All )browse facility databases have been cleared.
Internally cached functions and constructors have been cleared.
)clear completely is finished.
(1) -> f:=operator 'f
(1) f
Type:
BasicOperator
(2) -> y:=operator 'y
(2) y
Type:
BasicOperator
(3) -> kxy:=eval(D(f(x,z),[x,z]),z=y(x))
(3) f (x,y(x))
,1,2
Type:
Expression(Integer)
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