Maths_+Graphics+Calculator+Quadratic+Graphs

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Example1 (pg120 from manual)
Y = 2X^2 – 5

Press the following buttons in order:

2 --> X,Ө,T --> X2 --> 5 --> EXE

If you want to draw more then one graph at the same time, you need to highlight the selected function by using F1(SEL). If you don’t want to graph a particular function deselect it as above.

Example 2
Y= X^2+ 4X- 5

On calculator:

X,Ө,T --> X2 --> + --> 4 --> X,Ө,T --> - --> 5 --> EXE

//Note: you now have 2 equations on your calculator if you wany just to draw the second example then you need to scroll up(using the arrows button)to the first equation and press F1( FOR SEL). Example 1 is now unhighlighted and will not be drawn. If you change your mind and want it to be drawn then do the same as above again.//

//To find the x - intercepts://
Press Shift --> F5 --> F1(for Roots) wait till a cross comes down giving you the first intercept, now press the right arrow once to get the second intercept.

//To find the y-intercept://
Press F4 (for Y-ICPT) and wait

//To find Coordinates of Vertex or turnning point://
Press Shift --> F5 --> F3(Min) for basic Parabola or Shift --> F5 --> F2(Max) for an up-side-down Parabola