In addition to what others have written in this thread, there is yet
another potential confusion, stemming from such data types as elements of
polynomial rings. E.g.
sage: R.=QQ[]
sage: f=2*x*y-5
sage: type(f)
shows that f here is neither a python function nor a symbolic expression.
Although
I think you got it, but I'm just adding this below in case someone else is
also interested:
Here, this sequence defines a symbolic x, and that function f, and then
checks the types
x = var('x')
f=lambda x: x*sin(x)
type(f)
type(f(x))
and f(x) is still a symbolic expression.
Now we change x to b
William Stein wrote:
> On Wednesday, August 10, 2016, Todd Zimmerman
> mailto:todd.zimmerman@gmail.com>> wrote:
>
> I assumed that SageMath converts the functions into symbolic
> expressions.
> If I enter the following it will work:
>
>
> f=lambda x: x*sin(x)
> diff(f(x),
Jori Mäntysalo wrote:
> On Wed, 10 Aug 2016, William Stein wrote:
>
>> I was really surprised when I started Sage that people would often try
>> to **install all optional packages**, then report anything that went
>> wrong.I bet people still try to do this...
Well, it's good if people test th
