Turn on thread page Beta
 You are Here: Home >< Maths

# C2 - Logs watch

1. Stuck on this question:

Given that

Show that y=8x^2
2. 3+log2(x^2)=log2(y)
log2(x^2)-log2(y)=-3
log2(x^2/y)=-3
x^2/y=2^-3
x^2/y=1/8

And then solve for y
3. (Original post by Reety)
Stuck on this question:

Given that

Show that y=8x^2
You can write 3 as log2​8.

Turn on thread page Beta

### 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: May 16, 2015
Today on TSR

### Edexcel C4 Maths Unofficial Markscheme

Find out how you've done here

### 1,011

students online now

Exam discussions

Poll
Useful resources

## Make your revision easier

Can you help? Study help unanswered threadsStudy Help rules and posting guidelinesLaTex guide for writing equations on TSR

## Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE