Vectors 9.4 Intersection of 3 Planes (Part 1)

[@sharkachu9375]

Ms Havrot u the goat fr 💪💪💪💪💪🔥🔥🔥🔥🔥🐐🐐🐐🐐🐐 u carried me throughout the whole semester

[@mshavrotscanadianuniversit6234]

Glad you found my videos helpful ❤️

[@mb59621]

Appreciate the hardwork put in to draw those intersecting planes !

[@mshavrotscanadianuniversit6234]

Thanks!

[@blessingphophi9552]

Amazing content

[@laram3988]

is it possible to do addition when calculating matrices or is it always subtraction? as a random example if r1 + r3 would give zero am i allowed to add two rows or can there only be subtraction?

[@mshavrotscanadianuniversit6234]

You can definitely add as well. For example you could multiply a line by a negative number and then add

[@ammaralsaeed1525]

Could you check example 2 How is the t vector = (-4,2,1) if you set the 0z=0 and let z=t ? even if the vector t =( -4 , 2, 1) how did you get 1-4t -3+2t +2t=-2 while the point is (1 , -3 ,0) I find that t= (-4,2,0) I got stuck with this question. Thanks for your work (:

[@mshavrotscanadianuniversit6234]

t is not a vector, t is a parameter. Vector r (the direction vector) = (-4,2,1) 1-4t - 3 +2t +2t = -2 comes from substitution into the equation of the first plane. Hope that helps you. Perhaps watch it slowly for a second time. 😊

[@ammaralsaeed1525]

@@mshavrotscanadianuniversit6234 I got it Thank you (:

[@glittergirl1355]

Mrs can you do an exam for us plz!! I really want to do it in the summer to test my knowledge and see how much I remember for university!

[@mshavrotscanadianuniversit6234]

Hmmm ... I thought I had. I will check!

[@asdmmdsa1562]

My Teacher is asking to classify the system of matrix without solving HOW can I do that ?🙃

[@mshavrotscanadianuniversit6234]

I’m not quite sure what they are asking, however you could examine the matrix to see if the direction vectors can give you a clue. Check out the last question on my practice test to see if that’s what you are dealing with. kzbin.info/www/bejne/rZ_EdKuVZdRneqc