Let's consider a function f(x,y,z) and the following relationship between the variables:
f(x,y,z) = x+y+z
x << y << z around 0
I would like the first order Taylor expansion of f around 0. And I would expect this result:
>> taylor(f, (x,0),(y,0),(z,0),1)
z
But I have :
>> taylor(f, (x,0),(y,0),(z,0),1)
x+y+z
How can I do it?
