Thank you so much! My book didn't explain this but the homework asked about it. Your explanation was absurdly clear and easy to follow, it makes so much sense now!
I want to say, thank you very much for ur videos. There's a reason why I'm the best student. I've finished my AS maths on 15th and 17th Oct. I think it went quite well.
Yes I could have used lamda in both but when demonstrating in the same video I would have contradicted myself. lamda does not equal the same value of mu as I start from different points in the video. I hope that makes sense?
im just wondering but did it matter wether you used lamda or mu (sorry if they are spelled incorrectly). i mean could you have used lamda for both as its the same line??
No I didn't. r is the position vector of any point on the line. Have you looked back at my tutorials on the vector equation of a line? It is explained there.
It doesn't pass through the origin. I think you are confused over position vectors which are vectors that give the position of points and it is these that start from the origin by definition. Do check out my videos on position vectors first.
I don't understand.. you need to find the vector equation of the line passing through A and B, but you just found the vector equation of r.. WHY? *confused face*
