Lesson 8 of 20 · about 16 min
Inverse matrices
If a matrix moves the plane, can another matrix move it back? Usually, yes, and that undo-matrix is called the inverse. You'll hunt for the matrix that undoes a transformation, find the one kind of matrix that can never be undone, compute inverses by elimination, and then use them to crack a real 1929 cipher.
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In this lesson you'll learn:
- Inverse matrix
- Singular matrix
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