For 9iii I misread the q and used my value for a from the previous question but got the right solutions just with my a subbed in. How many do you think that would lose?

You might get 2 for using tan and solving your equation.

Reply 123

Mr M

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20

Original post by black1blade

On 4 ii, would I loose a mark for saying x=-3?

Drop 1.

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Original post by groceryboi

What was the equation of x^4 graph on question 7?

y=x^4-4x^3-2x^2+12x+9

Reply 125

Annonomous09

1

Hi Mr M, thank you for all these answers, it really helps a lot.

Which question is it that the answer is k=1/9 for? I can't find it in the answers you provided but I keep seeing people saying that they got that as an answer.

Reply 126

JamesK3000

If I used my answer for a from part ii in part iii but did the question with the correct method, how many marks would I get?

Reply 127

Kantth

1

On 6(iii) i got the formulas right and subbed the values in correct but in the next step i didnt times everything by 2 (as its 1/2N in the formula) but everything else i did right and ended up getting N>25.6 so got N=26

Reply 128

L0gical_2

1

On 9)iii) I forgot to divide by a. I got 1/3 pi and 4/3 pi. How many marks will I lose/get

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Reply 129

Hdhdn

On the integration question I forgot to write the +4 how many marks will I lose

Reply 130

Csd1999

1

Original post by Mr M

Probably drop 2 marks in total.

That would be lovely, I thought I'd drop 4 easily! Thanks.

Reply 131

Bruce267099

5

Original post by Mr M

Drop 1.

Thank you!!! :biggrin:

Also on the final part of the sequences question where we had to work out N;

I got up to N/2(10 + (N-1)1.5) - 1200 > 0
Got 1.5N^2 - 8.5N + 1200 = 0
How many marks will i get, if any?

Reply 132

Saching99

1

Gave 7iv as a decimal to 3 or 4 sig fig , it didnt say anytbing about it having to be a fraction right ?

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Original post by Annonomous09

Hi Mr M, thank you for all these answers, it really helps a lot.

Which question is it that the answer is k=1/9 for? I can't find it in the answers you provided but I keep seeing people saying that they got that as an answer.

It isn't a correct answer. There is a scale factor of 1/9 in 8ii.

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Original post by Saching99

Gave 7iv as a decimal to 3 or 4 sig fig , it didnt say anytbing about it having to be a fraction right ?

Drop 1. It said you had to give the exact area. In fact, you'll drop all the marks if you just typed that integral into your calculator and didn't show any working.

OP

Original post by Bruce267099

Thank you!!! :biggrin:

Also on the final part of the sequences question where we had to work out N;

I got up to N/2(10 + (N-1)1.5) - 1200 > 0
Got 1.5N^2 - 8.5N + 1200 = 0
How many marks will i get, if any?

You quadratic is wrong but your method is ok. Get 3 marks I expect.