Contents of this Linear algebra episode:

Determinant of 3x3 matrices, Determinant of 4x4 matrices, Expansion rule, Checkboard pattern, expanded along a column, expanded along a row.

Enter the world of simple math.
  • My seventh-grader brother learned to derive, which is quite an evidence that it is explained clearly.

    George, 18
  • Much better than any of my university lectures.

    Daniel, 20
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    Mark, 22
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    Milan, 19