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Re: Journal
Posted: July 11th, 2017, 7:36 am
by albinopapa
chili wrote:(float is fine though :kappa:)
Wait, what?
Re: Journal
Posted: July 11th, 2017, 8:47 am
by chili
albinopapa wrote:chili wrote:(float is fine though :kappa:)
Wait, what?
Re: Journal
Posted: July 15th, 2017, 4:28 pm
by Zedtho
Decided to finally continue watching the series. Currently at the 2d vectors episode and think I know what the answer to the puzzle is
Aside from that though, vectors are still kind of confusing to me. Do they represent a speed, direction or spot on the grid? I'll watch the video again but hear me out: I don't think it's a speed but that if the delta is 1 that the bigger the vector is the further it goes. It's kind of a direction, but then the vectors [1,2] and [2, 4] would be the same, which they aren't. I think this is what differentiates them from being a position, too. They're kind of a position, direction and speed combined. But this is just my imagination of them. Don't know why I wrote it here, I guess it makes it easier to understand vectors for me.
TL;DR
(I think) A vector is a direction that has a speed (like km/h in this case V * Delta) and a position incorporated in it. So, all the information one needs to do all kinds of good stuff.
Anyways, I'll go watch the video again and then do the homework before I continue watching the next episode.
Re: Journal
Posted: July 15th, 2017, 11:05 pm
by albinopapa
Yes, a math vector has direction and speed, going northeast at 25 kph ( 3.5355 kp/h north and 3.5355 kp/h east ).
It can represent a point on a grid, if you think of it as a direction and distance from the origin.
It can represent distance and direction from one point to another.
Re: Journal
Posted: July 16th, 2017, 4:18 pm
by chili
Yeah, you have the right idea with the puzzle.
As for your question, papa has it right of course.
A vector can represent all sorts of different things, its meaning is not fixed. Just a like a scalar number 69 could be a weight, an age, a magnitude of force, or a distance. A vector can represent a force (with both magnitude and direction), a velocity (which is speed + direction), an acceleration, a displacement (which is a relative position), an absolute position (which is a displacement from the origin), etc.
Re: Journal
Posted: July 28th, 2017, 8:16 am
by Zedtho
They make a lot more sense now, thanks for answering
I added Simon Says to this thread and am currently working on something else.