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# A tale of two integrals watch

1. A couple of (A-level) integrals for you guys to enjoy!

Problem 1

Find

Problem 2

Find

2. (Original post by Indeterminate)
A couple of (A-level) integrals for you guys to enjoy!

Problem 1

Find

Problem 2

Find

I approve
shame I am teaching
3. Disappointed by the fact that we haven't had any responses yet
4. (Original post by Indeterminate)
You guys disappoint me
I worked on the first one for literally an hour and couldn't get anywhere further than all multiples/orders of cosxs
5. (Original post by Indeterminate)
Disappointed by the fact that we haven't had any responses yet
My integration's a bit crap. Something like on the 2nd?
6. (Original post by Student403)
I worked on the first one for literally an hour and couldn't get anywhere further than all multiples/orders of cosxs

Getting rid of the half angles is the key to this one. How good is your trig?

(Original post by 16Characters....)
My integration's a bit crap. Something like on the 2nd?
Try it by all means
7. (Original post by Indeterminate)

Getting rid of the half angles is the key to this one. How good is your trig?

Try it by all means
I got rid of them all and got down to a large expression just involving a bunch of cosx's multiplied by each other and a few square roots and squares :/
8. (Original post by Student403)
I got rid of them all and got down to a large expression just involving a bunch of cosx's multiplied by each other and a few square roots and squares :/
I see. Well I'm sure Zacken will have a few ideas.

The purpose of this thread is to get you guys talking Think of me as a last resort
9. (Original post by 16Characters....)
My integration's a bit crap. Something like on the 2nd?
(Original post by Indeterminate)
I see. Well I'm sure Zacken will have a few ideas.

The purpose of this thread is to get you guys talking Think of me as a last resort
I'm thinking .
10. Re my last post: nopes.
11. (Original post by Zacken)
I'm thinking .
You've both made interesting suggestions However, it's not a straightforward, single-substitution integral.

I'd go with 16Characters....myself
12. Fairly sure I can see how to get the second one out. I'll give it a go soon.

Posted from TSR Mobile
13. (Original post by Indeterminate)
You've both made interesting suggestions However, it's not a straightforward, single-substitution integral.

I'd go with 16Characters....myself
Yeah, I realised. - you should totally give difficulty ratings for your integrals. (*, **, *** perhaps?).
14. (Original post by Zacken)
Yeah, I realised. - you should totally give difficulty ratings for your integrals. (*, **, *** perhaps?).
Haha, I'd say that they're both **

I could do worse
15. I'm down to:
16. (Original post by Zacken)
I'm down to:
So far, so good. Time to sort out the trig

Hint:
Spoiler:
Show
17. (Original post by Indeterminate)
So far, so good. Time to sort out the trig

Hint:
Spoiler:
Show
... But I moved from to the collected sine term.

I'm on right now.
18. (Original post by Zacken)
... But I moved from to the collected sine term.

I'm on right now.
Carry on. Let's see what you get!
19. (Original post by Indeterminate)
A couple of (A-level) integrals for you guys to enjoy
Hi, these integrals are beyond me!
I just wanted to say that I think the title of this thread is amazing! I don't know if you did it on purpose or not (you probably did) but it's so clever the qay it's like A tale of two cities

Posted from TSR Mobile
20. (Original post by Matrix123)
Hi, these integrals are beyond me!
I just wanted to say that I think the title of this thread is amazing! I don't know if you did it on purpose or not (you probably did) but it's so clever the qay it's like A tale of two cities

Posted from TSR Mobile
Yup I'm quite a fan of Dickens and A Tale of Two Cities is one of my most favourite works of his

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Updated: February 18, 2016
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