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# Edexcel AS/A2 Mathematics M1 - 8th June 2016 - Official Thread watch

1. Just a question, are you allowed to write vectors in Column notation in M1?

I prefer using it over, simple i and j algebraic notation.

Haven't reviewed mark schemes / past papers yet so just asking.
Just a question, are you allowed to write vectors in Column notation in M1?

I prefer using it over, simple i and j algebraic notation.

Haven't reviewed mark schemes / past papers yet so just asking.
I think you are for your working out, but a lot of questions ask for i and j notation so it's best to ensure your answers are always in i and j.
Just a question, are you allowed to write vectors in Column notation in M1?

I prefer using it over, simple i and j algebraic notation.

Haven't reviewed mark schemes / past papers yet so just asking.
(Original post by jamestg)
I think you are for your working out, but a lot of questions ask for i and j notation so it's best to ensure your answers are always in i and j.
Column vectors are fine, including for answers. The general instructions at the beginning of the mark schemes say
"Accept column vectors in all cases."
4. (Original post by jamestg)
I think you are for your working out, but a lot of questions ask for i and j notation so it's best to ensure your answers are always in i and j.
(Original post by tiny hobbit)
Column vectors are fine, including for answers. The general instructions at the beginning of the mark schemes say
"Accept column vectors in all cases."
Sounds good, thank you.
5. tips on m1 vectors?

i can score 60-65% of the marks on m1 vectors generally
but i score 85-100% on c4 vectors.
6. (Original post by XxKingSniprxX)
tips on m1 vectors?

i can score 60-65% of the marks on m1 vectors generally
but i score 85-100% on c4 vectors.
I've responded
7. can someone help me in this trapezium question, i need help finding the height the formula is
H=b-a/n
but when i used this formula i am unable to find the answer, the answer is supposed to be H=3
Attached Images

8. (Original post by djmans)
can someone help me in this trapezium question, i need help finding the height the formula is
H=b-a/n
but when i used this formula i am unable to find the answer, the answer is supposed to be H=3
Look at the diagram, count the intervals using your fingers. There are 1, 2, 3 intervals. Hence,
9. (Original post by djmans)
can someone help me in this trapezium question, i need help finding the height the formula is
H=b-a/n
but when i used this formula i am unable to find the answer, the answer is supposed to be H=3
this isnt m1, this is c4.
nevertheless, i hope your doubt is cleared
10. (Original post by Zacken)
Look at the diagram, count the intervals using your fingers. There are 1, 2, 3 intervals. Hence,
how is it 3, on the graph it shows 4 lines and on the table.
11. (Original post by therecovery)
this isnt m1, this is c4.
nevertheless, i hope your doubt is cleared
12. (Original post by djmans)
how is it 3, on the graph it shows 4 lines and on the table.
n is the number of rectangles. 4 lines make 3 rectangles.
13. (Original post by Zacken)
n is the number of rectangles. 4 lines make 3 rectangles.
thank you so much for the help
14. (Original post by djmans)
thank you so much for the help
No worries.
15. (Original post by Zacken)
No worries.
if you dont mind could you help me with this too
Attached Images

16. (Original post by djmans)
if you dont mind could you help me with this too
(i) is just an application of , so:

Where we used the fact that and .

(ii) is just an application of the fact that and .

So . Then ?

(iii) is just so

Remember that
17. When finding out what the frictional force is I see the b1 marks for F=Mu(R) does your notation matter would I still get the B1 mark for Fr=Mu(N).
18. (Original post by Middriver)
When finding out what the frictional force is I see the b1 marks for F=Mu(R) does your notation matter would I still get the B1 mark for Fr=Mu(N).
I would say it's best to avoid using N as that's an SI unit
19. (Original post by Middriver)
When finding out what the frictional force is I see the b1 marks for F=Mu(R) does your notation matter would I still get the B1 mark for Fr=Mu(N).
'course you would get the mark. You can use whatever notation you want as long as it's clear what you're doing.
20. (Original post by Zacken)
'course you would get the mark. You can use whatever notation you want as long as it's clear what you're doing.
Thanks! guess I'm just stressing.

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