You are Here: Home >< Maths

# integration c3 watch

1. part a) i worked out to be 0.7401
part b) i have turned the (sinx)^2 into 1-(cosx)^2 so am i right to do 1-0.7401 = 0.2599

Attachment 728202728208

also for this e^(x^2) am i right to split it up into (e^3)*(e^(x^2)) ?
Attached Images

2. (Original post by ihatePE)

part a) i worked out to be 0.7401
part b) i have turned the (sinx)^2 into 1-(cosx)^2 so am i right to do 1-0.7401 = 0.2599
No because we have

Hence we have

(though tbh, so maybe this is the expected approach and hence you would then be correct)

As for the other question, indeed that's the correct split.
3. May I ask where you got these C3 questions from? I'd like to check them out and do them myself.
Thank you
4. (Original post by RDKGames)
No because we have

Hence we have

(though tbh, so maybe this is the expected approach and hence you would then be correct)

As for the other question, indeed that's the correct split.
thanks, i always forget to integrate the constants!

i do the wjec board and they have every winter/summer papers from 2012 here

### Related university courses

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: February 28, 2018
The home of Results and Clearing

### 2,495

people online now

### 1,567,000

students helped last year
Today on TSR

### GCSE results day guidance

All you need to know is here

### University open days

1. Bournemouth University
Wed, 22 Aug '18
2. University of Buckingham
Thu, 23 Aug '18
3. University of Glasgow
Tue, 28 Aug '18
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