[senS]

Heres the exam paper guys. Not the mark scheme though. If anyone does make the mark scheme, inform me, so i could modify my post.


// Added question 1 and 2

[treeman1]

This is great thanks, do you have the first two questions as well?

[senS]

Forgot to add it , give me a sec guy

//Done Added

[treeman1]

Awesome

[Polioz]

some smart person do an unnficial markscheme please

[treeman1]

I'll probably try and make one soon.

[treeman1]

Also in question 7, what is the 6x to the power to? It's too fuzzy and I can't read it.

[maths.igcse]

what was the answer to the log question?

[Axion]

y=100x^3

[cabluigi]

(Original post by Axion)
y=100x^3

I got y= x^3 + 100 Dunno where I went wrong!

[Polioz]

(Original post by treeman1)
Also in question 7, what is the 6x to the power to? It's too fuzzy and I can't read it.

Think it was 6^1/2 If im not mistaken

[Polioz]

(Original post by cabluigi)
I got y= x^3 + 100 Dunno where I went wrong!

I think you will only lose 1 mark.

you kept the + in there when you should of multiplied. Log(3) + log(2) = log(6)

essentialy the formula was in the form of y=kx^n which is the same as
logy=logk +nlogx
y = c + mx
logk=2
k=100
n=3

so if you simplify logy=logk +nlogx we get .... logy=log(kx^n) ..... get rid of the logs.... y=kx^n ...... therefore y=100x^3




Im not great at explaining maths sorry

[posting]

i dont see how a straight line can be x^3? can some1 explain pls?

[maths.igcse]

yeah i got y=10^3x+2 is that just completely wrong? haha

[cabluigi]

(Original post by Polioz)
I think you will only lose 1 mark.

you kept the + in there when you should of multiplied. Log(3) + log(2) = log(6)

essentialy the formula was in the form of y=kx^n which is the same as
logy=logk +nlog
( the form we were given )

Im not great at explaining maths sorry

Hopefully you're right, I wouldn't mind losing a mark there

[Axion]

(Original post by posting)
i dont see how a straight line can be x^3? can some1 explain pls?

it wasnt a straight line. the axes were logy and logx which form a straight line.

I lost 5 marks so dw :P

[cgpboy]

what did people write for question for, y=3fx and y=f4x?

[maths.igcse]

(6,9) and (1.5,3) is what i got, not sure if that's right though

[treeman1]

(Original post by Polioz)
Think it was 6^1/2 If im not mistaken

Yeah I'm pretty sure it's that. I just redid the question and I got the same answer as I did in the exam so it must be a half.

[posting]

(Original post by maths.igcse)
(6,9) and (1.5,3) is what i got, not sure if that's right though

i got that too