There are 19 nonzero elements in the matrix.
How to determine the number of nonzero elements?
The attached image represents the proper representation of the matrix.
The nonzero elements are the elements that are not 0.
From the attached matrix, we have:
- Row 1: 4 nonzero elements i.e. 2, 3.1, 22 and 9
- Row 2: 3 nonzero elements i.e. 21, 3.2 and 6
- Row 3: 3 nonzero elements i.e. 1, 42 and 8
- Row 4: 4 nonzero elements i.e. 40, 4, 6 and 14
- Row 5: 5 nonzero elements i.e. 10, 20, 13, 5 and 6.3
Add the number of nonzero on each row
Total = 4 + 3 + 3 + 4 + 5
Evaluate the sum
Total = 19
Hence, there are 19 nonzero elements in the matrix.
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