Hello Everyone! I have just started using Mathematica.
I want to use Lists inside a function depending upon the value of a parameter. Eg:- If Parameter value = 1, I want to create a list and if parameter value = 2 then I want to create another list.
Then whatever be the parameter value I want to access the list created above and compute some values.
Can someone guide me how to go forward with the above problem?
Thanks in advance!
That’s a very vague description of what you want to do. I could show you thousands of examples of parameterized functions that work on lists, but I’d rather not just start stabbing in the dark. Could you please provide a more concrete/specific example of what you’d like to be able to do?
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Please understand that I would really like to help you, but this might get frustrating for you, because I need you to explain what problem you’re having. I know it seems obvious to you, but I have no idea what you’re struggling with.
You assigned a list to B. You can now do whatever you want with B. You can get its length: Length[B]. You can drop the first element: Rest[B]. I don’t understand why you think you can’t access it.
It might help if I point out that you’re doing a lot of pointless stuff in your code. You don’t need all of this imperative style initialization and reassignment stuff. Setting z = 0 isn’t necessary. B[[2]] extracts the second element of B, but you aren’t doing anything with it, so that’s a pointless thing to do. If I’m understanding the line with Sum in it, you’re just trying to add up the elements of the list. You can do that with Total. Since your B is “hardcoded” to two possible values, then the sum of B’s elements is “hardcoded” to two specific values.
On top of that, you’re defining Sum2 by first defining a function and then passing the arguments of Sum2 to that function. Why not just define Sum2 directly? Something like this:
Sum2[x_, y_] := If[x == 3, 6 + x + y, 15 + x + y]
If that’s not producing the results you want, then please explain what results you’re actually trying to get. Then we can show you how to get there.
I want to calculate the summation of the product of the Meijer G function, a constant depending on the running variable of the summation, and a list depending on the formal parameter.
Here mu is my formal parameter and depending on its value I want to create 3 different lists of size 31.
The problem I am facing is that error is showing with the message that “Part specification A[1] is longer than the depth of the object.”. I am not able to understand how to correct this error and access the list properly.
