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#flo #disorganized #inclass
1 Test :clap: review 👏
dot product -> scalar, thus not closed!
we will learn about the determinant before the cross product
1.0.1 system of equations
don't do substitution when doing lin alg can represent system of equations with a matrix – can solve with matricies matrix of coef * the vars advantage: cleaner, easier to enter into a computer
parralel systems
benifit in both directions -- understanding one helps us understand the other and vise versa
1.0.2 questions
- |a| |b| costheta
- dot product to calc magnitude
- dot by itself then sqrt
- system of equations with matricies, what do we multiply by
- to mul row by x: take identity, swap out y index 1 with x
- can just add, but not on the other side?
- some type of decomp?