You are Here: Home >< Maths

# Greatest practical use of maths & why? watch

1. OK - What do you think is the greatest practical use for maths at the moment and why.

I think that members ought to be entitled to state whatever they like without fear of ridicule, AS LONG AS IT COMES WITH AN EXPLANATION - the piece of Maths in question could be broad or narrow, simple or advanced

I myself am not too sure, hence the question, but I would like to think that the following should be contenders:

use of enormous prime numbers in cryptography could be a contender, since upon it lies the whole enormous banking system used the world over and

The number zero, without which place value would not be possible
2. Using mathematics to find out how we are here, and why the universe came into existence is the greatest practical use of mathematics.
3. differentiaL equations - to model real-life problems
4. (Original post by vitamortis)
Using mathematics to find out how we are here, and why the universe came into existence is the greatest practical use of mathematics.
cool, that's a biggy!
5. (Original post by Hasufel)
differentiaL equations - to model real-life problems

Yep
6. Using geometry to build buildings.
7. (Original post by vitamortis)
Using mathematics to find out how we are here, and why the universe came into existence is the greatest practical use of mathematics.
A physicist answer I like it.
8. The computer I'm using is a massive calculator!

Spoiler:
Show
Industrial design.
9. Basic Arithmetic:
Keeping accounts, imagine how the world would work if we couldn't count money.

Barter wouldn't even work, you wouldn't be able to count and trade, e.g. a cow for 3 pigs wouldn't work, it would have to be some cows for some pigs.
10. Figuring how much change your meant to get before the cashier does so you don't get shortchanged.

Or just simple maths we use everyday .... we'd be screwed without it. Hence why it is the greatest and most used
11. (Original post by wcp100)
The computer I'm using is a massive calculator!

Spoiler:
Show
Industrial design.
OK - but what about the mathematics that led to the discovery of quantum tunneling, the seemingly impossible magic trick that happens millions of times every second in every computing device in the world, including the computer that you are using
12. using area = pi*r^2 to work out which deals are the best value at pizza hut
13. (Original post by Andythepiano)
OK - but what about the mathematics that led to the discovery of quantum tunneling, the seemingly impossible magic trick that happens millions of times every second in every computing device in the world, including the computer that you are using
To be fair, most things seem impossible until you discover an explanation.
14. (Original post by ziedj)
using area = pi*r^2 to work out which deals are the best value at pizza hut
That doesn't account for thickness or topping.

Spoiler:
Show
The two for one deal at my local is better
15. (Original post by wcp100)
To be fair, most things seem impossible until you discover an explanation.
touche
16. (Original post by wcp100)
That doesn't account for thickness or topping.

Spoiler:
Show
The two for one deal at my local is better
Yes it does! let z= radius a= thickness, volume = pi . z . z . a
17. (Original post by Andythepiano)
Yes it does! let z= radius a= thickness, volume = pi . z . z . a
I see that pun

Pos rep.
18. Taylor series.

The basis of how calculators use sin/cos etc functions. Without it calculators won't calculate important functions and then the whole world will end
19. I guess I can go fairly specific - in my opinion the best use of maths (so far) was in forming Maxwell's Equations (below), which describe everything to do with electromagnetism. Everything.

EDIT: Also, the wave equation:

(Original post by Ilyas)
Taylor series.

The basis of how calculators use sin/cos etc functions. Without it calculators won't calculate important functions and then the whole world will end
http://www.thestudentroom.co.uk/show...37&postcount=8
20. Engineering?

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: September 30, 2011
Today on TSR

### Cambridge interviews

Find out which colleges are sending invitations

### University open days

Wed, 21 Nov '18
• Buckinghamshire New University
Wed, 21 Nov '18
• Heriot-Watt University
Wed, 21 Nov '18
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