Linear Algebra Question

  • Thread starter frasifrasi
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  • #1
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Linear Algebra Question....

So, the professor assigned this problem even though the book never touches on it whatsoever. I have no clud how to do it, so I would appreciate if anyone can describe the process of demonstrate.

Q. Find the polynomial of degree 2 whose graph goes through points (1,-1), (2,3), and (3,13).

Thank you for the help!
 

Answers and Replies

  • #2
Dick
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A polynomial of degree 2 is a*x^2+b*x+c=y. Substitute your three points and you get three linear equation in the variables a,b,c. Solve the system.
 
  • #3
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See the section where it talks about AX = 0, and about homogeneous trivial solutions (or non-trivial).
I strongly think that it would have something about this question in that section.
 
  • #4
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Dick, I think you got it...I will try it.

Should I solve for it by making it in rref ?
 
Last edited:

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