Turn on thread page Beta
    • Thread Starter


    I cant see if what you have written is right because I had no idea modulus was involved but I have just been playing around with some linear interpolation and from what I can see:

    If the curve is y=f(x) and the limits are a and b then the first approximation of the root, x_1 is given by:


    The way I got to this was from thinking about what linear interpolation actually is.

    First, you take a curve and find an interval which has a root in it, say a<x<b

    Then draw a straight line from one end of the interval to the other i.e. join the points (a,f(a)) and (b,f(b))

    Finally work out where this straight line crosses the x axis and bingo, you have your approximation.
Submit reply
Turn on thread page Beta
Updated: November 9, 2008


students online now


Exam discussions

Find your exam discussion here

Should predicted grades be removed from the uni application process
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

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