IB Math SL Vectors and Matrices Review - Topic 4 & 5

[@mathsl1]

These videos were produced for an older version of the curriculum but they may still prove useful so I'll leave them up. Neither vectors nor matrices are in the current AA SL curriculum. You can download the blank notes using the link in the video description. I've updated the links so they should work. That said, Google is sometimes fickle with Drive access so you may have better luck accessing them in Chrome and/or signed in to a Google account.

[@H0B0god]

Vectors start at 23:10

[@scarlin2506]

Cheers Carson!

[@adammeziti9480]

This video has done more for me than 1 month of vectors classes.

[@Titiyuki]

Thank you so much! This video did more good for me than 2-3 days of class.

[@TubbygenDollilipoop]

I can't tell you how many times these review videos have saved my butt

[@Cortgb34a]

Thank you very much sir, you have helped me greatly. I have now shared this video with some of my classmates, and I assure you they are as thankful to you as I am.

[@santiagopaz9299]

I have my mock Paper 1 tomorrow, and all of your review videos have been immensely helpful to me. Thanks a lot and keep it up!

[@keepcalmandmakeavid]

so glad we don't have to matrices anymore !!!!

[@woo2796]

keepcalmandmakeavid I just read this, after finishing matrices section.... lol

[@hotpunk5]

Thank you soooo much! Mocks are tomorrow and this saved me!

[@omarkyoussefomark]

Salma El Azhary wow salma, same video... we're so gonna fail these exams hahahahahhaha

[@annamarkovic3752]

thank you so so much I have never felt very confident with math but these videos help me to ensure that I understand some principle basics

[@mathsl1]

The velocity vector is not necessarily the same as the direction vector. They're parallel, but a direction vector could have any magnitude (it just needs to indicate direction) whereas the velocity vector needs a specific magnitude (namely the speed).

[@tomsu7475]

for the love of god, thank YOU!

[@filmeurs.8628]

46:09 What if we wanted the obtuse angle though? Do we add 180 to the result? Thanks for the vids again!

[@mathsl1]

Filmeurs. 180 minus the angle we found. Unlikely to be an issue in 3D though.

[@electirctides]

This is so helpful thank you so much !!!!

[@wissal7025]

thank u so much for the video really helped me

[@a110075]

do you have a HL video?

[@mathsl1]

nope.

[@cohnjena2246]

Where did you get 2 from on the velocity vector for the Alberto problem? Shouldn't it be 6? I think you made a mistake because you randomly say "it should be twice as much" but then proceed to not give an explanation.

[@mathsl1]

I do explain that the magnitude of the given vector is 3. And that the velocity vector needs to have a magnitude of 6. Therefore we multiply the direction vector by 2 to give it the correct magnitude. Sorry to hear you struggled with that, but the work is correct.

[@JsquareProductions]

Thank you

[@shaheedm.7198]

you made a mistake in the operations part, minute 2:58. the y value is supposed to be positive 4

[@mathsl1]

No, it's right. It should be negative 4 just like the vid says. That said, matrices are no longer part of the SL curriculum, so skip to 23:10.

[@shafinkheraj8210]

Thank you

[@moshinj1]

Legend!!

[@namelessnads]

Thanks!

[@ahsanpanjwani8661]

exam in one hr