Edexcel A2 C4 Mathematics June 2015 - Official Thread

Reply 100

Random1357

3

Original post by Gilo98

No, I was in Yr 10 last year so had no GCSEs - doing the same this year though :h:

Careful about A levels done too early: some unis dislike it.

Reply 101

Gilo98

14

Original post by Random1357

Careful about A levels done too early: some unis dislike it.

Yeah I was quite apprehensive, and thanks for the advice - I did talk it through with a couple university admissions tutors before taking the exams and their view was basically only do it if you get what you could potentially get doing it in yr12/yr13, that's why I over did the revision a bit last year :biggrin:

Reply 102

Random1357

3

Original post by Gilo98

Yeah I was quite apprehensive, and thanks for the advice - I did talk it through with a couple university admissions tutors before taking the exams and their view was basically only do it if you get what you could potentially get doing it in yr12/yr13, that's why I over did the revision a bit last year :biggrin:

Well good luck! :smile:

You going to apply for a maths degree?

Reply 103

Gilo98

14

Original post by Random1357

Well good luck! :smile:

You going to apply for a maths degree?

Thanks, and you too!!

I intend to if all goes to plan :smile:

Reply 104

ACarter8

2

How long did the integration chapter take people to do?

Reply 105

XxKingSniprxX

21

Original post by ACarter8

How long did the integration chapter take people to do?

Integration is the biggest chapter in A level Maths and will take quite a while to learn the theory
and become fluent in applying it to questions.

"To do" as in complete questions from the exercises, not long.
"To master" is another complete thing.

Reply 106

lam12

2

What text book is everyone using? Is the Pearson book (2005) better than the normal edexcel ones

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Reply 107

Dylann

21

Original post by lam12

What text book is everyone using? Is the Pearson book (2005) better than the normal edexcel ones

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I just use the normal textbook, it was more than enough. There isn't as much to "learn" in maths as other subjects but you have to practice a lot more...so the textbook isn't really that important if you can find questions elsewhere

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Reply 108

john122334455

With natural logs.

For example ln(5x+5) = ln(3x) + ln(5)

Why do you have to have exactly two terms to apply the e function and cancell the logs. Cant i just apply e now and cancell the logs for all three terms?? Please help!!!

Reply 109

tiny hobbit

15

Original post by john122334455

With natural logs.

For example ln(5x+5) = ln(3x) + ln(5)

Why do you have to have exactly two terms to apply the e function and cancell the logs. Cant i just apply e now and cancell the logs for all three terms?? Please help!!!

It's like squaring and square rooting, you can only do it to each side, not each term.

For instance, 2 + 3 = 5 but 4 + 9 does not equal 25.

Ln x and e^x are on the same rules.

Effectively in your example, it's because ln(3x) + ln 5 = ln(3x * 5) not ln(3x + 5)

Reply 110

clara16

8

Original post by ACarter8

How long did the integration chapter take people to do?

A week of learning & 2 weeks of practice before i was 100% with it

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Reply 111

HelloLosers!

What are the first four chapters in C4? can you list them please... PLEASE!!!!!!!!!!!!!

Nah that's it piss off guys

(edited 9 years ago)

Reply 112

Dylann

21

Original post by HelloLosers!

What are the first four chapters in C4? can you list them please... PLEASE!!!!!!!!!!!!!

Nah that's it piss off guys

Partial fractions
Coordinate geometry (with Cartesian)
Binomial expansion
Differentiation

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Reply 113

EmmaBxoxo

19

Original post by XxKingSniprxX

Integration is the biggest chapter in A level Maths and will take quite a while to learn the theory
and become fluent in applying it to questions.

"To do" as in complete questions from the exercises, not long.
"To master" is another complete thing.

I remember your name :moon:

Do you do further maths?

Which papers are you doing this year?

Reply 114

fictioned

1

Good luck everyone :smile:

There's like 3 more months left, we can do it :biggrin:

Reply 115

icecreamcake

15

Can someone help me integrate this please? This is my working out but my answer is different from the book. It's c4 volumes of revolution. Thank you very much! :smile:

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1426352580690.jpg50.2KB

Reply 116

rayquaza17

17

Original post by strawberrysnow

Can someone help me integrate this please? This is my working out but my answer is different from the book. It's c4 volumes of revolution. Thank you very much! :smile:

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(e^{x})^{2}=e^{2x}

Reply 117

icecreamcake

15

Original post by rayquaza17

(e^{x})^{2}=e^{2x}

Omg I'm such an idiot!! Thank you! :smile:

Reply 118

icecreamcake

15

Sorry to bother people again but can someone help me with this question? It's volumes of revolution (c4) again.

I just don't really know how to approach this problem - I tried integrating m^2x^2 but that ended up in a bit of a mess...

Thanks again! :smile:

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1426360789242.jpg22.1KB

Reply 119

tiny hobbit

15

Original post by strawberrysnow

Sorry to bother people again but can someone help me with this question? It's volumes of revolution (c4) again.

I just don't really know how to approach this problem - I tried integrating m^2x^2 but that ended up in a bit of a mess...

Thanks again! :smile:

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Remember that m is a constant so it's like integrating (7x)^2 i.e. 49x^2

Have you already written m in terms of h and r?

(edited 9 years ago)

Edexcel A2 C4 Mathematics June 2015 - Official Thread

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