You are Here: Home >< Maths

# P3 Vector Help Please watch

1. Hi,

If anyone has the P3 Heinemann Book could they talk me through question 17 on page 152 (exercise 5B) since I'm having lots of trouble with it. I've managed OM and OX of part (a) but can't manage OY, which also messes up the rest of the question.

Any help greatly appreciated!
2. (Original post by StuartYates)
Hi,

If anyone has the P3 Heinemann Book could they talk me through question 17 on page 152 (exercise 5B) since I'm having lots of trouble with it. I've managed OM and OX of part (a) but can't manage OY, which also messes up the rest of the question.

Any help greatly appreciated!

OY is OX + XY
This is traslated as:
OY = 3/4 (b) + 1/5 (XA)
OY = 3/4 (b) + 1/5 (XO + OA)
OY = 3/4 (b) + 1/5 (- 3/4 (b) + (a))
OY = 3/4 (b) - 3/20 (b) + 1/5 (a)
OY = 1/5 (a) + 3/5 (b)

3. Thank you, that was tremendous help!

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: March 6, 2005
Today on TSR

Uni realities

### University open days

• University of Lincoln
Mini Open Day at the Brayford Campus Undergraduate
Wed, 19 Dec '18
• University of East Anglia
Fri, 4 Jan '19
• Bournemouth University
Wed, 9 Jan '19
Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams