OCR MEI AS Mathematics Core 1 13/05/2013

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Reply 280

Studenthsr

Original post by Deceived

They asked for the minimum y value. I assume you'll receive full credit because you put (2,-7).

Ok thank you very much! If thats true, i can only see that i've lost 2 marks! hopefully get above 90! :biggrin:

Good luck all!

Reply 281

MrOxbridge

For the coefficient of x^3 I did all the working out and expanded the x^3 brackets and got -2560. But when I rewrote the answer to say that this is the coefficient, I forgot the - sign in front of 2560. How many marks will I lose for that because I got the right answers and you can see it it is just that I double underlined 2560 without the - sign?

For the circle intersecting the x and y axes I got 2+root 11 and 2-root11 but crossed this out and got different vales for y but still got the right values for x - how many marks have I lost there?

For the very last question I got k = 0 and 8 is that right? I f not do I get 2 marks (since it is out of 4) for it?

Thanks in advance

Reply 282

jakedamuss

So your answer went something along the lines of
-2560x^3 so the coefficient of x^3 is 2560?
That might be okay. In the past papers I've done they generally condone having the x in the answer of a coefficient question. Depends if they ignore subsequent working or not.

Reply 283

Moon1ight

If you've got C2 on Friday.Get off this thread - you're only dwelling on 1/3 of the 300 marks if you're doing the whole course this summer.

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Reply 284

MattyBoy299

I thought 125 was 5^2 for some reason and so my final answer as 5^2.5 instead of 5^3.5. Will I only loose one mark? because I did all the workings out correctly

Reply 285

linnet18

Anyone got a copy of the C1 paper?

Reply 286

simon105

Question 1. Can someone confirm what exactly it asked for? I skim-read it, presumed it said 'parallel' to the line, but people have told me it instead said 'perpendicular' to the line, which is obviously completely different.

Reply 287

Moon1ight

Original post by simon105

The gradient was - 0.5 so idk

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Reply 288

Timmy12321

Original post by simon105

It was -1/2

Reply 289

simon105

Original post by Timmy12321

It was -1/2

But what did the question ask for?

Reply 290

ap95

Original post by simon105

But what did the question ask for?

It asked for the equation of the line that was perpendicular to the line y=2x+something

Reply 291

simon105

****. 3 marks down the drain. Such an idiot.

Reply 292

student992

Original post by simon105

****. 3 marks down the drain. Such an idiot.

was it not parallel!?!

Reply 293

Rubyturner94

Original post by student992

was it not parallel!?!

no it was perpindicular :frown:

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Reply 294

simon105

Original post by student992

was it not parallel!?!

Apparently not. I read it as 'parallel' too. It's pretty gutting considering it's such a simple question :frown:

Reply 295

Moon1ight

I'm adamant i did the right thing but someone put the paper up please?!

(edited 10 years ago)

Reply 296

TheNote

the average of paapers is meant to be around 58, but i think paper had a few questions that either confused some people or they didn't quite get the correct answer, so I think A will be around 55 maybe 54 if we are lucky