Mathematics solutions (2 Viewers)

[cheschirecat]

Alrighty I'll just be rewriting the answers I got, if I got something wrong feel free to correct me since I'm just doing this off the top of my head with minimal working:

Question 1
a)
b)
c)
d)

e)
f)
g)

Question 2:
a)
i)
ii)
iii)
b)

c)
d)

e)



Question 3:
a)
i)
ii)
b)
c)
i) Distance formula
ii)
iii) perpendicular distance formula
iv)

v)



Question 4:
a)

b)
c)
d)
i)

ii)
e) and
or:


Question 5:

a)
i)
ii)
iii)

b)
i)
ii)
iii)

c)

Question 6:
a)
i)
ii) proof (might add it later)

b)
c)
i)
ii)
iii)
iv) 8
v)

Question 7:
a)
i)
minimum turning point:
Maximum turning point:
Point of inflextion:
ii) graph

b)
i)
ii)
iii)
iv)
v) graph

Question 8:
a)
i) proof
ii)

b)
i)
ii)

c)
i) proof
ii) 1) proof 2)

Question 9:
a)
i) proof (might post later if someone wants it)
ii) proof (ditto, involves proving triangles BFC and DFE are similar)

b) i) proof
ii)

c) graph

d) i)
ii)


Question 10:
a)
i)
ii) (or maybe 89)
iii)

b)
i) proof
ii) proof
iii)
iv)
v) Only possible to construct a Paddock in the shape of a sector if:


Rearranging i):

Therefore:


Rearranging:



Apologies in advance for poor formatting.

 

[forkandspoon]

You got question 1a wrong.

 

[cheschirecat]

Thanks!

Happy to help . Make sure to post if you find any mistakes.

 

[cheschirecat]

You got question 1a wrong.

Haha oh dear now I feel embarassed, all fixed up thanks for telling me.

 

[asianese]

10aii) Should be 89. If it's 90 then it exceeds the answer by a bit.

3aii) Should be $3,327,500,000 I think...

1a) Should be 3.728

 

[jamesfirst]

Oh shit. I got 4 e) wrong....

 

[friend177]

I thought 5 a ii was 19

 

[cheschirecat]

I thought 5 a ii was 19

Well I got n>19.something
Since it's greater than 19 and it's an integer I assumed it would be 20 however I might be wrong, not sure.

 

[jamesfirst]

I got 8b ii) wrong as well. OMGG

 

[sinsolja]

4 e)

And

 

[jamesfirst]

Is 6 b) v) right ??? I thought it was 6 ?

 

[cheschirecat]

10aii) Should be 89. If it's 90 then it exceeds the answer by a bit.

3aii) Should be $3,327,500,000 I think...

1a) Should be 3.728

Fixed 1a) I'm an idiot for doing that -.- haha
3aii) a=3000000 n=110 d=500000

=3602500000

hmm for 10 aii) you're probably right, I'm tempted to think it would be 90 though since they're asking for the maximum value which wouldn't be 89 either, so I'd assume you'd just round it off to the nearest point not just downwards, I'll put both results in though.

 

[perpetuity]

HAHAHAHHAHAHA... i'm loving the fact that james first keeps saying he got things wrong.

ALSO, LOL @ OP. COuldn't even the get the very first question correct, rounding to correct number of sig figs or decimal places correct. Man, you are dumb. Who is going to trust the rest of your answers after that display of fail? I could easily put up 100% gauranteed correct solutions in less than 1hr, but the dumb fucks keep banning me.

 

[friend177]

Well I got n>19.something
Since it's greater than 19 and it's an integer I assumed it would be 20 however I might be wrong, not sure.

On the 18th it was less on the 19th it was more...27(2^19-1) > 10000000

 

[qawe]

4 e)

And

3aii should be 3, 327, 500, 000

 

[perpetuity]

i got 8b ii) wrong as well. Omgg

hahaha

 

[cheschirecat]

Is 6 b) v) right ??? I thought it was 6 ?

They're asking for the value of the integral not the area so in this case it would be negative.

 

[perpetuity]

4 e)

And

that was the easiest 2marks in the whole paper (though it's hard to judge, pretty much 118 out of the 120 marks were REALLY easy, the other 2 were slightly harded)

 

[sinsolja]

3aii should be 3, 327, 500, 000

Yep i got that in the exam.

 

[jamesfirst]

4 e)

And

this is what I got.