You are Here: Home >< Maths

# C2 Help watch

1. Never thought I would need help for C2 right now, but here it is. Thanks in advance!
Question 8iii) No idea what to do...
there you go, thanks for reminding me
4. Have you calculated the sum to infinity?
5. a/(1-r)--->10/0.2=50
10(1-0.8^N)/0.2=(10-.8^N)/0.2
50-((10-.8^N)/0.2)=0.8^N/0.2
0.8^N/0.2<0.01
0.8^N<0.002 and I seem to be off by a tenth
6. (Original post by JChoudhry)
a/(1-r)--->10/0.2=50
10(1-0.8^N)/0.2=(10-.8^N)/0.2
50-((10-.8^N)/0.2)=0.8^N/0.2
0.8^N/0.2<0.01
0.8^N<0.002 and I seem to be off by a tenth
This bit. Careful when multiplying out the brackets.
This bit. Careful when multiplying out the brackets.
oh, I see what I did wrong there So silly of me to make such a mistake, thanks!!
8. Is the final answer 33.2?
9. (Original post by microfatcat)
For N, no.
10. (Original post by microfatcat)
It's 39 I think, can't be asked to check what I wrote
11. Nevermind, typed it up wrong. 38.2 it is

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: January 14, 2010
Today on TSR

### Congratulations to Harry and Meghan!

But did you bother to watch?

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