Symsum every other step

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Christian S. 2020-9-29

编辑： Alan Stevens 2020-9-30

Hi everybody,

I'm trying to get a symsum runnin' with a count of every other step.

The Formula itself looks like this:

My current code

a=2:2:10
syms p [1 size_x_r_sampling_meter];
f=k^2*p
f1=symsum(f,k,a)

obvjously doesn't work...

Could you please give me a hint, how to solve this problem?

Very best

Christian

Alan Stevens 2020-9-29

Does this help:

syms k p
a = [1 5];
f=@(k,p) (2*k)^2*p;
f1=symsum(f,k,a)
 
f1 =
 
220*p

Christian S. 2020-9-29

Hi Alan,

thank you for your answer. Sadly not, the function in my script was just a placeholder, the formula I have to go to is more complex.

Thank you anyways and very best

Christian

Alan Stevens 2020-9-29

编辑：Alan Stevens 2020-9-30

The principle of replacing j by, say, j = 2n, and then having n go from 1 to (M-1)/2 still holds.

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