- #1
quietrain
- 655
- 2
hi, i don't really understand what's the difference between vector product and dot product in matrix form.
for example
(1 2) X (1 2)
(3 4) (3 4) = ?
so when i take rows multiply by columns, to get a 2x2 matrix, i am doing vector product?
so what then is dot producT?
lastly, my notes says |detT| = final area of basic box/ initial area of basic box
where detT = (Ti) x (Tj) . (Tk)
so, what's the difference between how i should work out x VS . ?
also, |detT| = magnitude of T right? so is there a formula i should use to find magnitude?
so why is |k . k| = 1?
thanks
for example
(1 2) X (1 2)
(3 4) (3 4) = ?
so when i take rows multiply by columns, to get a 2x2 matrix, i am doing vector product?
so what then is dot producT?
lastly, my notes says |detT| = final area of basic box/ initial area of basic box
where detT = (Ti) x (Tj) . (Tk)
so, what's the difference between how i should work out x VS . ?
also, |detT| = magnitude of T right? so is there a formula i should use to find magnitude?
so why is |k . k| = 1?
thanks