I have
f(x,y)=x y+x^2+1
and
g(t)=(2 t, 3 t).
I want to obtain the function (f o g)(t) as a real-to-real one variable function.
What I tried:
f:=(x,y) -> x y+x^2+1, it's ok;
g:=t -> <2 t, 3 t>, it's ok.
But f@g returns f@g.
How it would be possible to obtain f o g ?