Matrix

Question

A=[[1,5],[3,6]]
B=[[3,1,-2],[4,0,7]]

result=[[0,0,0],[0,0,0]]

for i in range(len(A)):
for j in range(len(B[0])):
for k in range(len(B)):
result[i][j] + A[i][k] * B[k][j]

for r in result:
print(r)

this program can not run my computer.please give me a solution and how it does work please explained me

Answer 1

This line is not doing anything:
result[i][j] + A[i][k] * B[k][j]

If you want to assign a value to result[i][j], you should use the equal sign, like this:

result[i][j] = A[i][k] * B[k][j]