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Edexcel FP2 June 2015 - Official Thread

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You should have shaded outside of circle not inside, it was only inside for Z. When transformed by T becomes outside of circle

Reply 241

mrno1324

Original post by MentalMath

You should have shaded outside of circle not inside, it was only inside for Z. When transformed by T becomes outside of circle

Don't think so mate

Reply 242

jelo

Original post by AsianStandard

yes the integral was sinx, where pretty much a lot of my friends and other people said they got stuck in integrating cos2xsinx, you would use the cos2x expansion integrating after should get you

y= cot (x) - (2/3) cos^2(x) cot (x) + Ccosec(x)

and with coefficient 3

Reply 243

StarvingAutist

Original post by MentalMath

You should have shaded outside of circle not inside, it was only inside for Z. When transformed by T becomes outside of circle

nope, see my working (I've posted it in this thread or the other one, idk)

Reply 244

MentalMath

Original post by StarvingAutist

nope, see my working (I've posted it in this thread or the other one, idk)

I did a past paper with a similar question and it was inside then became outside after transformation

Reply 245

StarvingAutist

Original post by MentalMath

I did a past paper with a similar question and it was inside then became outside after transformation

Yes, but you can't just assume that because it was so in past papers it is so in this one. I didn't assume anything; I worked it out.

Reply 246

MentalMath

Original post by StarvingAutist

Yes, but you can't just assume that because it was so in past papers it is so in this one. I didn't assume anything; I worked it out.

Yh, really well done

Reply 247

MentalMath

Original post by StarvingAutist

Yes, but you can't just assume that because it was so in past papers it is so in this one. I didn't assume anything; I worked it out.

Will I lose just 1 mark if my circle is drawn in the right place

Reply 248

StarvingAutist

Original post by MentalMath

Will I lose just 1 mark if my circle is drawn in the right place

Yeah probably.

Reply 249

MentalMath

Original post by StarvingAutist

Yeah probably.

Well done tho your amazing

Reply 250

StarvingAutist

Original post by MentalMath

Well done tho your amazing

lol

Reply 251

MentalMath

Original post by StarvingAutist

lol

Do you think you got fully marks

Reply 252

crashMATHS

cos2xsinx = sin3x - sin x

And then I integrated that. Is that fine?

Reply 253

StarvingAutist

Original post by MentalMath

Do you think you got fully marks

I hope so! What do you think you got?

Reply 254

MrBowcat

What do we think the grade boundaries will be roughly. I messed up so many easy questions :frown:

worked out I got around 60/75

Reply 255

MentalMath

Original post by StarvingAutist

I hope so! What do you think you got?

Now that you exposed my mistake I think I got 74 :frown:

Reply 256

StarvingAutist

Original post by MentalMath

Now that you exposed my mistake I think I got 74 :frown:

Tragedy

Reply 257

TeeEm

please cast a vote in
http://www.thestudentroom.co.uk/showthread.php?t=3376607

Reply 258

DoctorDren

Original post by StarvingAutist

I got inside.

Is anything there wrong?

Just realised but oh well I only lost like 1 mark

Reply 259

TeeEm

Original post by MrBowcat

What do we think the grade boundaries will be roughly. I messed up so many easy questions :frown:

worked out I got around 60/75

I got a feeling that the boundaries will be very high ...

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Edexcel FP2 June 2015 - Official Thread

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