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Linear Algebra
- 1. 6.837 Linear Algebra Review Patrick Nichols Thursday, September 18, 2003 6.837 Linear Algebra Review
- 10. Vectors: Dot Product 6.837 Linear Algebra Review Think of the dot product as a matrix multiplication The magnitude is the dot product of a vector with itself The dot product is also related to the angle between the two vectors – but it doesn’t tell us the angle
- 14. Determinant of a Matrix 6.837 Linear Algebra Review Sum from left to right Subtract from right to left Note: N! terms
- 18. Orthonormal Basis 6.837 Linear Algebra Review X, Y, Z is an orthonormal basis. We can describe any 3D point as a linear combination of these vectors. How do we express any point as a combination of a new basis U, V, N , given X, Y, Z ?
- 19. Orthonormal Basis 6.837 Linear Algebra Review (not an actual formula – just a way of thinking about it) To change a point from one coordinate system to another, compute the dot product of each coordinate row with each of the basis vectors.