You are Here: Home >< Maths

# FP1 proof by induction question- sequences watch

1. Hi,

I've been practising some proof by induction qs, particularly the ones with sequences. I understand how to do the ones where you are given Un+1 and have to prove Un. However there are some where you are given Un+2 in terms of Un+1 and Un and you have to prove Un. Please could someone explain how to approach these ones?

Thanks
2. (Original post by VioletPhillippo)
Hi,

I've been practising some proof by induction qs, particularly the ones with sequences. I understand how to do the ones where you are given Un+1 and have to prove Un. However there are some where you are given Un+2 in terms of Un+1 and Un and you have to prove Un. Please could someone explain how to approach these ones?

Thanks
It may help if you watch this: https://youtu.be/yBbKFSLHlFw?t=706 (start at 11:48)

### 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 12, 2016
Today on TSR

### Results day under a month away

How are you feeling?

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