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Pre-Calc formulas
| Term | Formula |
|---|---|
| dot product | ( a1 x b1 ) + ( a2 x b2 ) |
| magnitude | V = sq root of (a^2 + b^2) |
| determinant of a 2 x 2 matrix | det A = ( a x d ) - ( c x b ) |
| determinant of a 3 x 3 matrix | the summation of j=1 to the nth aij Aij -> ( a11 x A11 ) + ( a12 x A12 ) + ( a13 x A13 ) -> Aij = ( -1 ) ^ i + j |Mij| where i = 1 and n = the number of rows |