Vector Projection

Projection of one vector onto another vector

Category:

People & Blogs

Tags:

• Vector
• Projection
• work
• unit
• vector
• dot
• product

[333329753]

why do we have to multiply that by unit vector?

[dangarbo10]

The 1.712 just tells us how long the vector is - it does not give us the direction. A vector has a magnitude and a direction. Since we are finding the projection of v onto u, the vector we are finding is in the direction of u. In fact, it lies on u. Thus multiplying by the unit vector in the direction of u gives us the proper direction.

[kurt44ko]

i thought u use the formula a.b/|b| (b/|b|) but this way works

[dangarbo10]

Well, it is true that you can find the answer using that formula ... but doesn't that just leave you a little empty inside if you don't really understand it?

[aalibobally333]

i was watching the old guy, but this guy looked cuter

[Roaddogg666]

Thank you! This made 100 times more sense than my professor

[bscmsc70]

Thank you, you just saved me a lot of time and effort

[rlusher2]

you are the bestttt! thank you!

[PhibeRCoRe]

Thank you so much, this helped me alot!

[ScorpiaX]

@illusionmajik I know right? My damn teacher was like you GOTTA MEMORIZE teh formulas, so you know what to PLUG in...you don't need to know what these formulas do or w/e just know how to use them.

=.=

versus my physics teacher..you gotta ask the right questions and know what YOU're doing.

[reyzmeyz]

Thank you <3



[martyp417]

I dont know why you spend your time filming yourself teaching math, but i appreciate it SO MUCH. I wish I had discovered your videos a long time ago. ... i UNDERSTAND!!!

[SRT262]

LEGEND

[livchristinemusic]

I feel like I'd be doing better in my calc 3 class if I sat and watched these videos all day instead of going to class. :)

[nwleng]

OMAGAH I GET IT!