Edexcel A2 C4 Mathematics June 2015 - Official Thread

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Reply 380

bbadonde2

I hate C4!

Reply 381

Gilo98

Original post by bbadonde2

I hate C4!

I hate s1 even more...its so ****ing tedious! :mad:

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Reply 382

bbadonde2

Original post by Gilo98

I hate s1 even more...its so ****ing tedious! :mad:

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Oh I did it last year and understand your frustrations! I think I only properly got it like 2 weeks before the exams, just hammer the past papers

Reply 383

Gilo98

Original post by bbadonde2

Oh I did it last year and understand your frustrations! I think I only properly got it like 2 weeks before the exams, just hammer the past papers

That's my plan....I'm way too disinterested to actually understand what I'm doing when I answer questions - just going to chug through the formulas and learn answers :ahee:

Reply 384

TH3-FL45H

Tbh i loved s1 just because it was so easy

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Reply 385

lam12

Attachment not found

For question C, why does the limits switch round?

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Reply 386

H0PEL3SS

Original post by lam12

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For question C, why does the limits switch round?

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If you have a negative integral, you can switch the limits around to get rid of the minus sign

Reply 387

ACarter8

I've just done the june 14 paper and did pretty well apart from the last part of the vector question. I've done past papers chronologically and seem to have noticed that the vector questions are getting more obscure. Like I think have decent undrestanding of vectors but seem to trip up on more obscure questions. Anyone know a resource with difficult/obscure vector Qs to practice. Or even any tips on better understanding vectors. I also seem to muck up my diagrams maybe that's because I have messy working.

Reply 388

lam12

Original post by H0PEL3SS

If you have a negative integral, you can switch the limits around to get rid of the minus sign

You learn something new every day haha, Thanks :-)

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Reply 389

username1084917

Hi, can someone please help me do question (d). I've tried it multiple times but can't get to the answer shown in the book.

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Reply 390

randlemcmurphy

Original post by Kira Yagami

Hi, can someone please help me do question (d). I've tried it multiple times but can't get to the answer shown in the book.

I've just completed it, may I ask how far you got, because I think I may know where you went wrong.

Reply 391

ThePrestigeUK

Original post by randlemcmurphy

I've just completed it, may I ask how far you got, because I think I may know where you went wrong.

Is the answer u-1/4u^2+c

I just done that in 2 mins, is that right ?

been practicing integration all day hope it is

Reply 392

username1084917

Original post by randlemcmurphy

I've just completed it, may I ask how far you got, because I think I may know where you went wrong

Hi, thanks for the reply. This is the answer. I managed to get the ln term but not the root x^2 +4 part. I don't know where I went wrong.

(edited 8 years ago)

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Reply 393

username1084917

Original post by ThePrestigeUK

Is the answer u-1/4u^2+c

I just done that in 2 mins, is that right ?

been practicing integration all day hope it is

Hi, just posted the answer. The answer substitutes back in for u. i don't think the your answer is correct.

I've been practicing all day too. Just can't seem to get this answer!

Reply 394

username1162972

Just did the above and I think people are going wrong by not being able to rearrange for the desired result.
Not that integrals in the form 1/x^2-a^2 are in the formula book. Using this does the question in a couple of minutes.

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Reply 395

randlemcmurphy

Original post by Kira Yagami

Hi, just posted the answer. The answer substitutes back in for u. i don't think the your answer is correct.

I've been practicing all day too. Just can't seem to get this answer!

Original post by ThePrestigeUK

Is the answer u-1/4u^2+c

I just done that in 2 mins, is that right ?

been practicing integration all day hope it is

I will post my solution with working out in a little bit. On the other hand you could check out the worked solution in the Ch6 Solution Bank here. (solution on page 42)