Hey there! Sign in to join this conversationNew here? Join for free
 You are Here: Home >< Maths

# What does it mean to dilate a 3D object? watch

1. For example, to dilate a spheroid by a factor of k , would it just go from

(x/a)^2+(y/b)^2+(z/c)^2=1

to

(kx/a)^2+(ky/b)^2+(kz/c)^2=1

?
2. (Original post by number23)
For example, to dilate a spheroid by a factor of k , would it just go from

(x/a)^2+(y/b)^2+(z/c)^2=1

to

(kx/a)^2+(ky/b)^2+(kz/c)^2=1

?
dilate I think means enlarge

I could be wrong but to enlarge in a given direction by scale factor k, you replace the corresponding cordinate say x, by x/k

Reply
Submit reply
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 27, 2015
Today on TSR

### Tuition fees under review

Would you pay less for a humanities degree?

### Buying condoms for the first time - help!

Discussions on TSR

• Latest
Poll
Useful resources

## Make your revision easier

### 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

Can you help? Study help unanswered threads

## Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest

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

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.