2001 moriah solutions (1 Viewer)

[maths > english]

when i submitted the 2001 moriah paper to the resources section of this site i left out the solutions

i submitted the solutions a few weeks ago but they havent been put up yet so im attaching them to this post

 

[lfc_reds2003]

well done matey!!!!!!!!!!

 

[acmilan]

hmm its weird im 100% sure i added those along with a bunch of others from maths ext 1. I even remember them coming up at the front page under 'recently added notes.' Ill ask the admins if there could be a problem.

 

[Ogden_Nash]

Thanks for that. I did that test a while ago and have been looking for the solutions to it.

Just a query regarding Q4 iv) (the locus question).
Shouldn't you specify the restrictions of the locus? Obviously it can only exist between the y-axis and the right branch of the hyperbola, so shouldn't you say the locus is:
y = 10/3 for 0 < x < 15/2

Just curious, thanks in advance.

 

[maths > english]

Hey Ogden_Nash, sorry ive taken so long to reply

for 4d part iv:

x = ^10pq/_p+q ..... [1]

y = ¹⁰/_p+q ..... [2]

p+q = 3 ..... [3]

so from [2] and [3] y = ¹⁰/₃

However, from [1] and [3]

:. x = ^10p(3-p)/₃

:. Max x = ¹⁵/₂

:. x <= ¹⁵/₂

so answering ur question yes, the domain of x should be restricted