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How can i use this calculator to find a quadratic equation through given points

Guest Sep 7, 2014

Best Answer 

 #2
avatar+26971 
+5

The general equation for a quadratic is y = a*x2 + b*x + c, so if you have 3 points, say (-1, 3), (2, 18) and (5, 69),  you can use the equations section of the calculator to solve for a, b and c as shown in the images below:

quadratic entry

 

Quadratic solution

Alan  Sep 8, 2014
 #1
avatar+93342 
0

I don't think that you can.

Melody  Sep 8, 2014
 #2
avatar+26971 
+5
Best Answer

The general equation for a quadratic is y = a*x2 + b*x + c, so if you have 3 points, say (-1, 3), (2, 18) and (5, 69),  you can use the equations section of the calculator to solve for a, b and c as shown in the images below:

quadratic entry

 

Quadratic solution

Alan  Sep 8, 2014
 #3
avatar+93342 
0

Thanks Alan,

I didn't know the calculator could do that.

It is probably not quite what the asker had in mind but it could be and I am glad that you showed me! 

Melody  Sep 8, 2014

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