yeah im doing this type of thing:
```
<0.1s
2
In [14]:
# Create symbolic matrices using matrix constructor with SR
A = matrix(SR, 1, 2, var('X11 X21'))
B = matrix(SR, 2, 2, var('W11_1 W21_1 W12_1 W22_1'))
C = matrix(SR, 2, 3, var('W11_2 W21_2 W12_2 W22_2 W13_2 W23_2'))
# Multiply the matrices
D = A * B * C
# Print the resulting matrix
print(D)
```
