singaporeolevelmaths | Simple, Practical Tips for Better Maths Results!

Nov/07

13

E-Maths Note: Quadratic Equations & Graphs

3 Different representations of a quadratic equation & its significance

y=3x^2 – x + 5 : typical quadratic equation : Max/Min & instant answer to y-intercept
y=(x+4)^2 – 1 : Completed Squ form : Great for solving equation

y=(x-3)(x+2) : Instant answer to x-intercepts aka roots

Since we are on this topic of quadratic, one of the most important aspects is quadratic graphs.
There is a software which I use often for plotting of all sorts of graphs!
Yes, what you need to do is to “feed” the software with the equation of the graph that you intend to plot!

Get your free software for plotting by clicking here >>
Graphmatica Software

Now you know how your teachers plot their nice nice graphs :)

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About Ai Ling

Hi, my name is Ai Ling Ong and I'm a professional Math Trainer specializing in GCE 'O' level Mathematics (Additional & Elementary). More than 10 years of teaching experience, I have coached hundreds of students more than 80 schools in Singapore. Read more about me here
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