If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)

Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie

Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

Asked to prove the addition rule from first priciples?

eoins2345 · 2010-01-09 00:46:18

In 2002 they were asked to prove the addition rule from first principles but are book concise maths only shows u how to prove it using logs.in the marking scheme it says no first principles is worthless and merits no marks.If you write down the log proof in the exam do you get full or no marks?

09-01-2010 12:46am

#1

eoins2345

Closed Accounts Posts: 154 ✭✭

Join Date: December 2007

Posts: 123

In 2002 they were asked to prove the addition rule from first principles but are book concise maths only shows u how to prove it using logs.in the marking scheme it says no first principles is worthless and merits no marks.If you write down the log proof in the exam do you get full or no marks?

0

Comments

#2 09-01-2010 1:27am

MathsManiac

Registered Users, Registered Users 2 Posts: 1,595 ✭✭✭

Join Date: April 2007

Posts: 1571

Are you talking about the addition rule or the product rule?

The addition rule is easy, and logs are not helpful.

If you're talking about the product rule, then see this thread:

http://www.boards.ie/vbulletin/showthread.php?t=2055576737

0
#3 09-01-2010 12:53pm

eoins2345

Closed Accounts Posts: 154 ✭✭

Join Date: December 2007

Posts: 123

sorry ment the product rule.got mixed up.Thanks saw the thread before ages ago but couldnt remember the result of it.

0