Solving for values in a table

Please attach the Prime worksheet, not just/only a picture.

Some upfront advice:

1. Make sure that k is defined.

2. Vectorize the expression at the right-hand side of the definition.

3. DON'T evaluate a definition. That is: do NOT put an '=' at the end of a definition. It may work in many cases, but in ever so many cases it leads to problems. Use a separate region to evaluate your expression.

Success!
Luc

You have to delete the equal sign after the function definition and evaluate the function in a separate region.

Furthermore I guess you will have to vectorize the function call as you will get wrong results otherwise.

I second what Luc already said - attach the worksheet!

EDIT: Ahh, I see that in the meanwhile Luc has edited his reply and suggests quite the same 😉

Another option would be that you don't define a function but a simple variable eta:=...
In this case you would have to use vectorization as well but you could use inline evaluation (the = after the definition). But for some reason inline evaluations have proven to be instable in some situations and so I suggest not using it.

BTW, inline evaluation never works when defining a function.