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4 questions
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How can I create an indexed function in SymPy?
What I want is to create an indexed function. Something of the form:
Where i is an integer and x is real. The idea is then to be able to integrate or take the x derivative:
I've been looking ...
- 21
1
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1
answer
530
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Summing vector products in SymPy
The following code computes $\sum_{i=1}^3 x_i y_i$ symbolically first, and then substitutes specific numeric values into the expression to yield a single number. (I've added some lines to show ...
- 13
0
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1
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SymPy: Derivatives of KroneckerDelta and indices
Please refer to the following MWE:
import sympy as s
x = s.IndexedBase('x')
y = s.IndexedBase('y')
i,j,k = map(s.Idx,['i','j','k'])
a = s.exp(x[i]*y[j]*s.KroneckerDelta(i,j))
b = a.diff(x[j])
The ...
user6764549
0
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2
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319
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Storing original indices in Sympy indexed objects
I want to be able to take an Indexed object, substitute values for its indices but still remember its original indices.
from sympy.tensor import IndexedBase, Idx
C = IndexedBase("C")
i,j = Idx("i"), ...
- 559