Hi!

I realized that Mathematica allows the very convenient notation

f[{a,b,c}]

to produce the output

{f[a],f[b],f[c]}

as long as f is a defined function.

But I ran into a problem where this does not work as I expected:

I defined a function in the following way:

f[x_]:=expression/.indepvar->x

Thereby, expression is an algebraic expression, and indepvar the corresponding independent variable, which are both given as arguments to a subroutine within which f is defined.

Calling f with a single value for x works fine. E.g. if expression = r^2, and indepvar = r, then

f[2]

gives

4

This also works when expression is just a constant. E.g. if expression = 1, and indepvar = r, then

f[2]

gives

1

as it should.

However this is not like that when I feed the function with a Table: Tagin again, expression = r^2 with indepvar = r,

f[{1,2,3,4}]

gives

{1,4,9,16}

However, with expression = 1 and indepvar = r

f[{1,2,3,4}]

gives

1

instead of {1,1,1,1} as I would have expected, and as I would need it.

Can anyone explain me how I can change that?