[fricas-devel] how to integrate a generic function in FriCAS?

['Nasser M. Abbasi' via FriCAS - computer algebra system]

sorry for basic question, but after some search I could find what the
correct syntax is.
Some integrals I need to run in Fricas use a generic function as in f(x) in
the integrand. For example

integrate(F(x)/(sqrt(x)*sqrt(-x + 1)),x)

Fricas does not like the above
-------------------
(1) -> integrate(F(x)/(sqrt(x)*sqrt(-x + 1)),x)
There are no exposed library operations named F but there is one
unexposed operation with that name. Use HyperDoc Browse or issue
)display op F
to learn more about the available operation.

Cannot find a definition or applicable library operation named F
with argument type(s)
Variable(x)

Perhaps you should use "@" to indicate the required return type,
or "$" to specify which version of the function you need.
-----------------------

What do I need to do to make it work?
using FriCAS 1.3.4

Thanks,
--Nasser

[oldk1331]

You should use

F := operator "F"

to let the system know that 'F' is a function that can be applied to variables.

On Thu, Jul 12, 2018 at 8:07 AM, 'Nasser M. Abbasi' via FriCAS -

Post by 'Nasser M. Abbasi' via FriCAS - computer algebra system
sorry for basic question, but after some search I could find what the
correct syntax is.
Some integrals I need to run in Fricas use a generic function as in f(x) in
the integrand. For example
integrate(F(x)/(sqrt(x)*sqrt(-x + 1)),x)
Fricas does not like the above
-------------------
(1) -> integrate(F(x)/(sqrt(x)*sqrt(-x + 1)),x)
There are no exposed library operations named F but there is one
unexposed operation with that name. Use HyperDoc Browse or issue
)display op F
to learn more about the available operation.
Cannot find a definition or applicable library operation named F
with argument type(s)
Variable(x)
or "$" to specify which version of the function you need.
-----------------------
What do I need to do to make it work?
using FriCAS 1.3.4
Thanks,
--Nasser
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