Closed MinDu183 closed 1 year ago
When I use sum(σ(2,2) - σ(1,1)) the system reports an error.
σz = σ(2,2) - σ(1,1) without sum()
σz = σ(2,2) - σ(1,1)
sum()
When I use sum(σ(2,2) - σ(1,1)) the system reports an error.