- #1
Einstein
- 13
- 1
"simple" vector problem
I need help on the second part of this question:
The points A and B have position vectors (4i -11j +4k) and (7i +j +7k) respectively.
a) Find vector equation of the line passing through the two points in terms of a parameter t.
My answer: r = 4i -11j +4k + t(3i +12j +k)
b) Find the position vector of the point P on AB such that OP is perpendicular to AB where O is the origin.
I have attempted this many times but I do not know how to start. Can anyone please tell me how to. I am on the level capable of understanding scalar and dot product and converting vector equations into cartesian equations so i appreciate if you can keep it as simple as this (not too complex) and understandble. Thanks. By the way the answer to b) is 6i -3j +6k
I need help on the second part of this question:
The points A and B have position vectors (4i -11j +4k) and (7i +j +7k) respectively.
a) Find vector equation of the line passing through the two points in terms of a parameter t.
My answer: r = 4i -11j +4k + t(3i +12j +k)
b) Find the position vector of the point P on AB such that OP is perpendicular to AB where O is the origin.
I have attempted this many times but I do not know how to start. Can anyone please tell me how to. I am on the level capable of understanding scalar and dot product and converting vector equations into cartesian equations so i appreciate if you can keep it as simple as this (not too complex) and understandble. Thanks. By the way the answer to b) is 6i -3j +6k
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