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National and Regional Contests
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South Korea USCM
2019 Korea USCM
1
1
Part of
2019 Korea USCM
Problems
(1)
Find rank of 3by3 matrix
Source: 2019 South Korea USMC P1
8/13/2020
A
=
(
2019
2020
2021
2020
2021
2022
2021
2022
2023
)
A = \begin{pmatrix} 2019 & 2020 & 2021 \\ 2020 & 2021 & 2022 \\ 2021 & 2022 & 2023 \end{pmatrix}
A
=
2019
2020
2021
2020
2021
2022
2021
2022
2023
. Find
rank
(
A
)
\text{rank}(A)
rank
(
A
)
.
linear algebra
too easy
rank
matrix
college contests