Turn on thread page Beta

Maths quadratic inequalities watch

    Offline

    11
    ReputationRep:
    (Original post by Muttley79)
    PLEASE don't ever suggest this approach ... it is always possible to avoid and people remember it incorrectly or don't understand why.
    Fair enough. :-)

    Could we infer the condition from the quadratic formula instead?
    Offline

    19
    ReputationRep:
    (Original post by simon0)
    Fair enough. :-)

    Could we infer the condition from the quadratic formula instead?
    It's fine to do it using the discriminant - just avoid dividing by a negative coefficient by collecting the unknown on the other side of the inequality.
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: October 25, 2017

University open days

  • Staffordshire University
    Everything except: Midwifery, Operating Department Practice, Paramedic Undergraduate
    Sun, 21 Oct '18
  • University of Exeter
    Undergraduate Open Days - Exeter Campus Undergraduate
    Wed, 24 Oct '18
  • University of Bradford
    Faculty of Health Studies Postgraduate
    Wed, 24 Oct '18
Poll
Who is most responsible for your success at university
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

Equations

Best calculators for A level Maths

Tips on which model to get

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.