Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta
    • Thread Starter
    Offline

    0
    ReputationRep:
    ? what does this mean as opposed to just a normal arrow with regards to functions.
    • Thread Starter
    Offline

    0
    ReputationRep:
    it didn't come out. Rather than the question mark, it was meant to be an arrow coming out from a bar l-->
    Offline

    18
    ReputationRep:
    Tried to paste it, but didn't come out, but think i know what u mean.

    is the function
    f: a (notation) b means the function f maps the element a to the element b.
    Offline

    0
    ReputationRep:
    When specifying a function between two sets it is conventional to write it as
     f:A \rightarrow B to say which set is mapped to which. When specifying a rule, or where an element maps to, use the arrow with a bar. (is latex it is \mapsto). For example the exponential function could be  \mathrm{exp}:x \mapsto e^x
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: March 22, 2011
Poll
Do you agree with the proposed ban on plastic straws and cotton buds?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

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

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.