You are Here: Home >< Maths

# C2 soloman paper B. integration with an infinate limity

Announcements Posted on
Why bother with a post grad course - waste of time? 17-10-2016
1. (Original post by thefatone)

i integrated and got

then i put values in and got

[0]-[1.414]
so is -1.414 correct as an answer?
You've messed up your . The function is positive everywhere in the domain of integration; does a negative answer really make sense? You mean , not 1.414.
2. (Original post by Zacken)
You've messed up your . The function is positive everywhere in the domain of integration; does a negative answer really make sense? You mean , not 1.414.
better? i changed it

oh ... i just used my calculator but yes

so does that mean the area i got is below the x-axis?
3. (Original post by thefatone)
better? i changed it

oh ... i just used my calculator but yes

so does that mean the area i got is below the x-axis?
No, it means you integrated wrong.
4. (Original post by Zacken)
No, it means you integrated wrong.
aww s**t let's try again

so integrating

subbing infinity gives 0

subbing 2 in gives

so i get positive ????
5. (Original post by thefatone)
...
Where'd the negative in the denominator go?
6. (Original post by Zacken)
Where'd the negative in the denominator go?
oh.... lemme change that
7. (Original post by thefatone)
oh.... lemme change that
Okay, it's fine now. Now do your limits and remember the negative signs.
8. (Original post by Zacken)
Okay, it's fine now. Now do your limits and remember the negative signs.
all better? (editied)
9. (Original post by thefatone)
all better? (editied)
Yes.

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: April 9, 2016
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:
Today on TSR

### How does exam reform affect you?

From GCSE to A level, it's all changing

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read here first

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams