composition of functions

[Mark Hardman]

(07-22-2014 09:14 PM)Alberto Candel Wrote:  

(07-22-2014 04:07 PM)parisse Wrote:  Please give an example.

For instance

f(x):=x^2
g(x):=x+1
f@g returns ((x)->x^2)@((x)->x+1)

I do not know the meaning of @

The CAS is providing an intermediate solution to the composition.

If you execute:

simplify(f@g)

You get the expected result:

(_(x))->_(x)²+2*_(x)+1