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what is the x and y component of that rotated vector?
imagine that top vector being in a box, and u move that box down
or rotate the box 90 degrees clockwise which is 270 degrees counter clockwise
So is the matrix you mentioned my final answer?
i wanteed you to come up with that matrix but u left in the middle
Sorry my Internet went down.
do u want to know tho, how we get that matrix
if our first vector was
= a1 i + a2 j what would our rotated vector look like
that box height is a2, and widht is a1 can u see that
but when you rorate that box 90 degrees what wud the height and width be
Sort of yeah. I can only see half of your drawings tho so its kind of difficult.
ok nvm then
1 sec ill give u best link to understand this stuff and any other question about this stuff
ugh its in parts, the question pops up in lecture 1 and then in lecture 3 halfway he talks about it again
I can just see if someone else can help us. If you want.
i can just give u the answer but
watch that at 14 mins and ull understand why
lecture 2 at 14 mins http://www.youtube.com/watch?v=9FLItlbBUPY then watch the lecture 3, at 33:30 time http://www.youtube.com/watch?v=9FLItlbBUPY
it shud take you about 5 mins to watch that
In that picture, I only see the green matrix and <1, 4>. What's on the other side?
just watch it.. he draw the same picture
oh this is what i wrote
[ 0 1] [-4 ] | [ x ] [-1 0 ] [ 1 ] | [ y ] solve for x and y
but what sthe point of knowing the answer, just watch those 5 mins of those lectures and undesrstand everything
Oh ok. Can you show me how to solve for x and y? Would that be the answer to my question? I'd rather not watch a video.