You are Here: Home >< Maths

# FP1 Calculus URGENT HELP please!

Announcements Posted on
Why bother with a post grad course - waste of time? 17-10-2016

1. Q3 is from FP1 Calculus...have no idea how to do it since I got two 'problem values' here

2. I've only just finished learning FP1, and this is how I would go about it Replace the infinity with 'a', then integrate as normal. As 'a' tends towards infinity, the integral also tends towards infinity! As I said I'm also just a student so let me know if anyone disagrees
Attached Images

3. (Original post by Oliviazh)

Q3 is from FP1 Calculus...have no idea how to do it since I got two 'problem values' here

Integrate as normal. When it comes to substituting limits, you cannot substitute because it is not a number. Instead, you assign a different variable, such as , and take the limit of the integral as
4. (Original post by RDKGames)
Integrate as normal. When it comes to substituting limits, you cannot substitute because it is not a number. Instead, you assign a different variable, such as , and take the limit of the integral as
But how about 0? Cuz my teacher also said that we need to replace 0 with a different variable.... that's why I'm confused cuz it then will be two variables😂
Or is it in this case we don't need to consider 0?
5. (Original post by Oliviazh)
But how about 0? Cuz my teacher also said that we need to replace 0 with a different variable.... that's why I'm confused cuz it then will be two variables😂
Or is it in this case we don't need to consider 0?
Well technically speaking the function is undefined at x=0 so you would need to replace it as well, but personally I would skip this because the integrated function will be defined at x=0.

If it was or something then you would indeed need to replace the 0.
6. (Original post by RDKGames)
Well technically speaking the function is undefined at x=0 so you would need to replace it as well, but personally I would skip this because the integrated function will be defined at x=0.

If it was or something then you would indeed need to replace the 0.
Thanks a lot!
7. (Original post by spoiler-s)
I've only just finished learning FP1, and this is how I would go about it Replace the infinity with 'a', then integrate as normal. As 'a' tends towards infinity, the integral also tends towards infinity! As I said I'm also just a student so let me know if anyone disagrees
Thank you!

## 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: October 13, 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

### A level maths

Which modules should I take?

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