x Turn on thread page Beta
 You are Here: Home >< Maths

# simple integration question watch

1. This may seem like a really obvious question but I can't seem to work out how to do this integration:

I've tried substitution but it's only made the whole thing more complicated. Any ideas?
2. Try
3. It looks like there's been an error whilst giving you this question, it's quite tedious and annoying. There's the hyperbolic trig sub as the above user has pointed out or which gets you where a standard reduction formulae gets you where you want to go.
4. (Original post by B_9710)
Try
thank you! i don't think i've been taught trigonometric substitution, yet this is a question in the AQA fp2 text book so i'm guessing i have to learn it.
5. (Original post by XOR_)
How about differentiating y=(4x^2+5)^3/2; therefore dy/dx = (8x)(3/2)(4x^2+5)^(1/2)?
Nopes.
6. (Original post by Zacken)
Nopes.
Ah kay
7. is this supposed to be in the AQA FP2 specification? i have no recollection of having learnt it! :-/
8. (Original post by tanyapotter)
is this supposed to be in the AQA FP2 specification? i have no recollection of having learnt it! :-/
Have you learnt about hyperbolic functions?
9. (Original post by Zacken)
Have you learnt about hyperbolic functions?
yes. i know up to integrals which integrate to inverse hyperbolic functions but i'm pretty sure i don't know how to substitute trig functions in to integrate
10. (Original post by tanyapotter)
thank you! i don't think i've been taught trigonometric substitution, yet this is a question in the AQA fp2 text book so i'm guessing i have to learn it.
Well there is not a specific section on integration using hyperbolic functions - you have simply been made aware of the hyperbolic functions in FP2 - tools which can be used for integration.
11. (Original post by tanyapotter)
yes. i know up to integrals which integrate to inverse hyperbolic functions but i'm pretty sure i don't know how to substitute trig functions in to integrate
I'm fairly sure you should... it's on Edexcel FP2 that's for sure. Do you have a link to the FP2 AQA specification?
12. (Original post by Zacken)
I'm fairly sure you should... it's on Edexcel FP2 that's for sure. Do you have a link to the FP2 AQA specification?

this screenshot shows everything that comes under inverse trig and hyperbolics and i've covered all of this content
13. (Original post by Zacken)
I'm fairly sure you should... it's on Edexcel FP2 that's for sure. Do you have a link to the FP2 AQA specification?
Wait wut? You sure that's not FP3 Edexcel?
14. (Original post by Student403)
Wait wut? You sure that's not FP3 Edexcel?
Yeah, that's what I meant. I mashed all my learning of C1-4 together and mashed FP2-3 together so I don't know what's in one and not the other. Thanks.
15. (Original post by Zacken)
Yeah, that's what I meant. I mashed all my learning of C1-4 together and mashed FP2-3 together so I don't know what's in one and not the other. Thanks.
Typical you learning so fast :3

All good

(Original post by tanyapotter)
x
16. (Original post by Student403)
Typical you learning so fast :3

All good

that's such a relief. i've spent so long trying to work it out! thanks

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: March 29, 2016
Today on TSR

### Loughborough better than Cambridge

Loughborough at number one

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams