F(x,y)=x+y, if varaibles increases i need to mention so many variables in f(), how to avoid that

[LucMeekes]

Define the function as
F (x)
Where x is a vector. Vectors can be very large.
Example, for 3 variables you define
F (x):x [0+x [1+x [2

Success!
Luc

[Werner_E]

Here are some examples of functions with vector arguments: