Hey, im encountering an failure here:
I want to use for every row another Dp as shown here:
Thx ! 😃
Using Dp as variable name AND function name may be confusing and may not be good style (I would avoid it), but definitely it IS allowed.
Not much can be said about your picture as we don't see the type (scalars, vectors) of your various variables.
You also don't reveal why you think that you are experiencing is a failure.
Probably Mathcad is doing right anyway. Could it be that you simply don't know that you can tell Mathcad to show nested matrices via format menu?
Otherwise - explain what the failure is in your opinion and maybe you can post a simplified (!!!) worksheet to demonstrate the faiilure.
WE
(it may even cause an error).
I guessed it would throws an error, but it doesn_t 😉
Nevertheless its bad style and something which should be avoided.
Werner
I think we can agree on that its bad style and, as we all wrote, we would avoid it.
Nevertheless I would not consider it "not allowed" as we are not in the position to allow or disallow other people, especially Stefan, what they have to do or not. We can only advise that from our experience doing so is not favorable and can lead to confusion.
Mathcad handles the situation confidently and correct and so if Stefan wants to name function and formal argument the same, he sure is allowed to do so, even if we advise against doing so.
The point is - From what we see, using the same name sure is not the cause for any failure, Stefan may be experiencing. Changing the name would not help as it would not change anything - other than making us happy as we consider it better style 
Ok here is my input for the search function:
as to see my guess value is a Vector with 2 rows. Here: 25.35 for the first and the same value for the second.
It is also possible that the input vector for startening the iteration has different values for the rows. For example: 25.35 (first and 120 for the second).
It is also possible that i have more than 2 rows.
So as to say i want to do the Iteration for every row. And mathcad should take the vector (Dp, here 25,35 anf 25.35) as startening point for the iteration for every row independend.
The solution here should be 67.92 and 65.64.
Thx 😃
Try removing the vectorization. If that does not work for some reason, pass the guess values as an argument to the function Dp (this is really the preferred solution anyway, because it should always work):
You have created a function to calculate D.p and the guess value obviously should depend on two of this functions arguments. So the guess D.p should not be static as in your sheet as you need different guess values if you call your function with different values.
Unfortunately we cannot calculate the guess value in the solve block but at least we can pass it as a function argument. So I have chosen that the function which is called to calculate D.p first calculates the guess value and then calls the solve block function with this guess as additional argument. I also added the "onerror" statement to cope for input values which make the solve block fail.
Now you may call this function with scalars or vectors of any size (given they all are of the same dimension).
You did not show if S.Y is a vector or a scalar. If its a vector, you need vectorization, otherwise you should use vectorization but you mustn't.
But I have the impression that you did not want to create a function to be used multiple times with different input values but simply wanted to do the calculations just once but with the values in your vectors one by one. If thats the case you might do it the easy way like this:
WE
