Cambridge Extension 2 solutions available (1 Viewer)

tywebb

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As of last Friday Cambridge University Press have been releasing solutions to their new Extension 2 book.

But they are coming out in bits and pieces.

So far they have the enrichment questions for chapters 1-3.

They also say on their website “Solutions for selected foundation and development questions are in preparation, as are solutions for all enrichment questions in chapters 4-6.”

More specifically, Cambridge Extension 2 solutions currently available:

1A Q17, 18, 19, 20
1B Q17, 18, 19
1C Q15, 16, 17
1D Q23, 24, 25
1E Q22, 23, 24
1F Q19, 20, 21
1G Q19, 20, 21, 22, 23
2A Q16, 17 (incorrectly numbered 15, 16)
2B Q20, 21, 22, 23, 24
2C Q16, 17, 18, 19
2D Q19, 20, 21
2E Q22, 23, 24, 25

(2F Q17, 18, 19, 20, 21 missing)

3A Q18
3B Q15
3C Q12, 13, 14, 15
3D Q16, 17, 18, 19
3E Q16, 17

It also says in the book "No-one should try to do all the questions".

So which ones to do? I would suggest seeing which ones they publish - and do the rest (at least ... + enough more to cover the syllabus if necessary).

I think their intention is to publish all the enrichment ones, but maybe not all the others.

EDIT 1: Solutions for enrichment questions for chapters 4-6 have since been released. Scroll down to subsequent posts to see which numbers are available.

EDIT 2: Development and Foundation questions are starting to be released too now.
 
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harrowed2

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I have the textbook but haven't been able to find these solutions. Where will I find them?
 

tywebb

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tywebb

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The following have been added today:

4A Q6, 7, 8, 9
4B Q9, 10
4C Q13, 14, 15
4D Q14, 15
4E Q8, 9
4F Q14, 15, 16, 17
4G Q17, 18
4H Q15, 16, 17
4I Q15, 16, 17, 18, 19
 

tywebb

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The following have been added today:

5A Q14, 15, 16
5B Q18, 19, 20
5C Q21, 22
5D Q21, 22
5E Q11, 12
5F Q26
5G Q18, 19, 20
 

tywebb

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The following have been added today:

6A Q20, 21, 22
6B Q23, 24
6C Q20, 21, 22, 23
6D Q12
6E Q12, 13
6F Q18, 19, 20, 21

(6G Q17 missing)
 

tywebb

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Here are a few more (5F Q15-19, 5G Q16, 5H Q18) - but beware that these solutions use methods outside the syllabus like scalar triple product and the Penrose inverse.

Nevertheless it seems that they also contain a correction to one of the questions in the textbook (5F Q17a). The question can also be changed to get the answer given.

 
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tywebb

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Chapter 2 Development questions and Review solutions are available now, i.e.,

2A Q7, 8, 9, 10, 11, 12, 13, 14, 15
2B Q7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19
2C Q6, 7, 8, 9, 10, 11, 12, 13, 14, 15
2D Q7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18
2E Q3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21
2F Q6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16
2G Q1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25
 

tywebb

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Development and Review solutions are available now for Chapters 3 and 4 but they are not complete (only 3 missing):

3A Q10, 11, 12, 13, 14, 15, 16, 17
3B Q5, 6, 7, 8, 9, 10, 11, 12, 13, 14
3C Q6, 7, 8, 9, 10, 11a, 11b, 11c
3D Q5, 6, 7, 8, 9, 11, 12, 13, 14, 15
3E Q6, 7, 8, 9, 10, 11, 12, 13, 14, 15
3F Q1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18
4A Q4, 5a, 5b, 5c, 5d, 5f
4B Q5, 6, 7, 8
4C Q4, 5, 6, 7, 8, 9, 10, 11, 12
4D Q6, 7, 8, 9, 10, 11, 12, 13
4E Q4, 5, 6, 7
4F Q6, 7, 8, 9, 10, 11, 12, 13
4G Q5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16
4H Q5, 6, 7, 8, 9, 10, 11, 12, 13, 14
4I Q4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
4J Q1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12

3C Q11d missing
3D Q10 missing
4A Q5e missing
 

tywebb

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Development and Review solutions are available now for Chapters 5, i.e.,

5A Q7, 8, 9, 10, 11, 12, 13
5B Q7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17
5C Q7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
5D Q6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
5E Q5, 6, 7, 8, 9, 10
5F Q9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25
5G Q10, 11, 12, 13, 14, 15, 16, 17
5H Q1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23
 

tywebb

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someone wanna just upload them for free?...
No need to do that. If schools have already purchased a code for them, the publisher allows teachers to give them to the students - without the students having to pay for it.

So students can legally get them for free through their school, but it is up to the teacher to decide whether to allow students to have access to them - at least that’s according to Cambridge’s own rules.

Page v in textbook says:

“The Interactive Textbook powered by Cambridge HOTmaths offers selected worked solutions (as an option that teachers can choose to enable for student access)”

The rule is different for the ebook itself though. They don’t want schools sharing that for free to the students.

Every page of the ebook says this on the bottom of each page:

“this material must not be transferred to another party”

As for online solutions, of course you can do your own and upload them, but I would suggest that we should focus on the ones Cambridge haven’t provided.
 
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tywebb

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Solutions to foundation questions for Ch 1, 2, 3 and 5 have been released today (with some missing):

1A Q1, 2, 3, 4, 5, 6, 7, 8, 9
1B Q1, 2, 3, 4
1C Q1, 2, 3, 4, 5
1D Q1, 2, 3, 4, 5, 6, 7, 8, 9, 10
1E Q1, 2, 3, 4, 5, 6
1F Q1, 2, 3, 4
1G Q1, 2, 3, 4, 5
2A Q1, 2, 3, 4, 5, 6
2B Q1, 2, 3, 4, 5, 6
2C Q1, 2, 3, 4, 5
2D Q1, 2, 3, 4, 5, 6
2E Q1, 2
2F Q1, 2, 3, 4, 5
3A Q1, 2, 3, 4, 5, 6, 7, 8, 9
3B Q1, 2, 3, 4
3C Q1, 2, 3, 4, 5a, 5b, 5c
3D Q1, 2, 3, 4
3E Q1, 2, 3a, 3b, 3c, 3d, 4, 5
5A Q1, 2, 3, 4, 5, 6
5B Q1, 2, 3, 4, 5, 6
5C Q1, 2, 3, 4, 5, 6
5D Q1, 2, 3, 4, 5
5E Q1, 2, 3, 4
5F Q1, 2, 3, 4, 5, 6, 7, 8

(3C Q5d, 3E Q3e and 5G Q1, 2, 3, 4, 5, 6, 7, 8, 9 missing)
 

D3spair

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Can anyone screenshot worked solutions and post them up here??
 

tywebb

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Can anyone screenshot worked solutions and post them up here??
I already answered that for ultra908 who asked the same question.

Here is the same answer:

No need to do that. If schools have already purchased a code for them, the publisher allows teachers to give them to the students - without the students having to pay for it.

So students can legally get them for free through their school, but it is up to the teacher to decide whether to allow students to have access to them - at least that’s according to Cambridge’s own rules.

Page v in textbook says:

“The Interactive Textbook powered by Cambridge HOTmaths offers selected worked solutions (as an option that teachers can choose to enable for student access)”

The rule is different for the ebook itself though. They don’t want schools sharing that for free to the students.

Every page of the ebook says this on the bottom of each page:

“this material must not be transferred to another party”

As for online solutions, of course you can do your own and upload them, but I would suggest that we should focus on the ones Cambridge haven’t provided.
 

D3spair

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I already answered that for ultra908 who asked the same question.

Here is the same answer:

No need to do that. If schools have already purchased a code for them, the publisher allows teachers to give them to the students - without the students having to pay for it.

So students can legally get them for free through their school, but it is up to the teacher to decide whether to allow students to have access to them - at least that’s according to Cambridge’s own rules.

Page v in textbook says:

“The Interactive Textbook powered by Cambridge HOTmaths offers selected worked solutions (as an option that teachers can choose to enable for student access)”

The rule is different for the ebook itself though. They don’t want schools sharing that for free to the students.

Every page of the ebook says this on the bottom of each page:

“this material must not be transferred to another party”

As for online solutions, of course you can do your own and upload them, but I would suggest that we should focus on the ones Cambridge haven’t provided.
My teacher does not buy textbooks. Their teaching style is different. I was aware of the comment above. Anyways, could someone provide solutions for the textbook, pm me please!
 

tywebb

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My teacher does not buy textbooks. Their teaching style is different. I was aware of the comment above. Anyways, could someone provide solutions for the textbook, pm me please!
If you can't get it through your school, you can get it here instead: https://www.cambridge.edu.au/education/titles/CambridgeMATHS-Stage-6-Mathematics-Extension-2-Year-12-Online-Teaching-Suite/ . But you'll have to pay to get it this way.

I think most students can get it through their school though.
 
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tywebb

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Development solutions for Chapter 6 are available now, i.e.,

6A Q7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19
6B Q9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22
6C Q7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19
6D Q4, 5, 6, 7, 8, 9, 10, 11
6E Q4, 5, 6, 7, 8, 9, 10, 11

(6F Q7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17 and 6G Q7, 8, 9, 10, 11, 12, 13, 14, 15, 16 missing)
 
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tywebb

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Foundation Solutions for Chapter 4 were released today i.e.,

4A Q1, 2, 3
4B Q1, 2, 3, 4
4C Q1, 2, 3
4D Q1, 2, 3, 4, 5
4E Q1, 2, 3
4F Q1, 2, 3, 4, 5
4G Q1, 2, 3, 4
4H Q1, 2, 3, 4
4I Q1, 2, 3
 

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