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# Vector question....... watch

1. How do I find the position vector from this:
I think Im suposed to use Simultaneous equations maybe

r=(1+2p)i+(3+p)j , r=(3+u)i + (2+u)j
2. (Original post by joyoustele)
How do I find the position vector from this:
I think Im suposed to use Simultaneous equations maybe

r=(1+2p)i+(3+p)j , r=(3+u)i + (2+u)j
What does the question actually say?
3. (Original post by Charliewiz)
What does the question actually say?
Oh Damn. Im so sorry. I missed out one key bit of information. This wont happen again.

The question says:

Find the position vector of the point of intersection of the following pairs of lines.

I think I have done it anyway though. I just had to equate the i and j components to each other, and solve by simultaneous equations.
4. (Original post by joyoustele)
Oh Damn. Im so sorry. I missed out one key bit of information. This wont happen again.

The question says:

Find the position vector of the point of intersection of the following pairs of lines.

I think I have done it anyway though. I just had to equate the i and j components to each other, and solve by simultaneous equations.
Then yes, you've done it. Subbing p or q into one eq or the other yields the position vec.
5. yes, you just make the i bits match up and the j bits match up.

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