In linear algebra, the upper triangular matrix plays a very important role.

Linear algebra is a branch of mathematics that studies the theory of vector spaces and linear transformations.

In linear algebra, triangular matrices play a very important role.

He worked hard to accomplish his goals.

Please put the book on the shelf above.

In addition, he can play the piano.

His role is the team leader.

A lower triangular matrix is a matrix where all the elements below the main diagonal are zero.

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