100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Summary OCR MEI Mathematics: Year 1 (AS) Pure - Quadratic Functions Cheat Sheet $3.86
Add to cart

Summary

Summary OCR MEI Mathematics: Year 1 (AS) Pure - Quadratic Functions Cheat Sheet

1 review
 28 views  0 purchase
  • Course
  • Institution

This document briefly summarises the key points in the Year 1 'Quadratic Functions' topic of OCR's Mathematics (MEI) course.

Preview 1 out of 2  pages

  • January 22, 2021
  • 2
  • 2020/2021
  • Summary

1  review

review-writer-avatar

By: tsmith3553 • 1 year ago

avatar-seller
Quadratic Functions
Graphs
● Factorising quadratic expression gives information about the graph of the
function
● X-intercepts found from numbers in each bracket
● Y-intercept is product of numbers in brackets
● If there is a single negative x in the factorised expression, the graph is
inverted

Example
S ketch the curve y = x2 + 5x + 6
x2 + 5x + 6 = (x + 2)(x + 3)
x − intercepts at x =− 2 and x =− 3
y − intercept at y = 6




Disguised Quadratics
● Some graphs don’t look like quadratics
● Can be rewritten as conventional-looking quadratics

Example
S olve x4 − x2 − 6 = 0
Let y = x2
y2 − y − 6 = 0
(y − 3)(y + 2) = 0
y = 3, y = − 2 → x2 = 3, x2 = − 2
x = ± √3

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller JodbyBerundi. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $3.86. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

53068 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$3.86
  • (1)
Add to cart
Added