Using the sign change rule (new A level)

This resource covers the use of graphs and/or the sign-change rule to investigate roots of equations, as required for the new A level. It contains notes, explanations and examples to work through with your class followed by an exercise of questions for students to attempt themselves (answers included).

The notes cover:

(a) Use of a sketch of y=f(x) and y=g(x) to investigate roots of f(x) = g(x)
(b) Using a sketch of y=f(x)-g(x) to investigate roots of f(x)=g(x)
© Using the sign-change rule
(d) Conditions where the sign-change rule can be misleading

This projectable and printable resource will save you having to create or write out any notes/examples when teaching the topic, and will make things easier for your students as they can just work directly on the given spaces provided for solutions. Answers to the exercise are included.

Also included is a short activity to show how this method can be used to find smaller intervals where a root lies, which can be used as an introduction to iterative methods.

Here is an example of one of my A level resources that is freely available:

https://www.tes.com/teaching-resource/differentiation-and-integration-with-exponential-and-trigonometric-functions-new-a-level-11981186

$1.92
Save for later
  • Using-graphs-and-the-sign-change-rule.docx
  • Using-the-sign-change-rule.docx
  • Using-the-sign-change-rule-(solutions).docx

About this resource

Info

Created: May 21, 2019

Worksheet

docx, 327 KB

Using-graphs-and-the-sign-change-rule

Activity

docx, 49 KB

Using-the-sign-change-rule

Activity

docx, 58 KB

Using-the-sign-change-rule-(solutions)

Report a problem

Get this resource as part of a bundle and save up to 33%

Tes Paid Licence

How can I re-use this?