Examples

Find the Result of 4 Times the 4×4 Identity Matrix
44
Step 1
The identity matrix or unit matrix of size 44 is the 4×44×4 square matrix with ones on the main diagonal and zeros elsewhere.
[1000010000100001]⎢ ⎢ ⎢ ⎢1000010000100001⎥ ⎥ ⎥ ⎥
Step 2
Multiply the scalar 44 by the identity matrix.
4[1000010000100001]4⎢ ⎢ ⎢ ⎢1000010000100001⎥ ⎥ ⎥ ⎥
Step 3
Simplify.
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Step 3.1
Multiply 44 by each element of the matrix.
[41404040404140404040414040404041]⎢ ⎢ ⎢ ⎢41404040404140404040414040404041⎥ ⎥ ⎥ ⎥
Step 3.2
Simplify each element in the matrix.
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Step 3.2.1
Multiply 44 by 11.
[4404040404140404040414040404041]⎢ ⎢ ⎢ ⎢4404040404140404040414040404041⎥ ⎥ ⎥ ⎥
Step 3.2.2
Multiply 44 by 00.
[404040404140404040414040404041]⎢ ⎢ ⎢ ⎢404040404140404040414040404041⎥ ⎥ ⎥ ⎥
Step 3.2.3
Multiply 44 by 00.
[40040404140404040414040404041]⎢ ⎢ ⎢ ⎢40040404140404040414040404041⎥ ⎥ ⎥ ⎥
Step 3.2.4
Multiply 44 by 00.
[4000404140404040414040404041]⎢ ⎢ ⎢ ⎢4000404140404040414040404041⎥ ⎥ ⎥ ⎥
Step 3.2.5
Multiply 44 by 00.
[400004140404040414040404041]⎢ ⎢ ⎢ ⎢400004140404040414040404041⎥ ⎥ ⎥ ⎥
Step 3.2.6
Multiply 4 by 1.
[40000440404040414040404041]
Step 3.2.7
Multiply 4 by 0.
[4000040404040414040404041]
Step 3.2.8
Multiply 4 by 0.
[400004004040414040404041]
Step 3.2.9
Multiply 4 by 0.
[40000400040414040404041]
Step 3.2.10
Multiply 4 by 0.
[4000040000414040404041]
Step 3.2.11
Multiply 4 by 1.
[400004000044040404041]
Step 3.2.12
Multiply 4 by 0.
[40000400004040404041]
Step 3.2.13
Multiply 4 by 0.
[4000040000400404041]
Step 3.2.14
Multiply 4 by 0.
[400004000040004041]
Step 3.2.15
Multiply 4 by 0.
[40000400004000041]
Step 3.2.16
Multiply 4 by 1.
[4000040000400004]
[4000040000400004]
[4000040000400004]
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