Question

Patilputra

14 Feb 2025
Answer :
Word Count : 580

The given quadratic form is:

\[
Q(x, y, z) = -x^2 + y^2 + z^2 + 4xy + 4xz
\]

To find the orthogonal canonical reduction and principal axes, we follow these steps:

1. Write the quadratic form in matrix notation:  
   A quadratic form in three variables can be expressed as:

   \[
   Q(x, y, z) = \begin{bmatrix} x & y & z \end{bmatrix} \begin{bmatrix} a_{11} & a_{12} & a_{13} \\ a_{12} & a_{22} & a_{23} \\ a_{13} & a_{23} & a_{33} \end{bmatrix} \begin{bmatrix} x \\ y \\ z \end{bmatrix}
   \]

   By comparing the given form with the general expression, we identify the coefficients of the quadratic form:
   
   \[
   Q(x, y, z) = -x^2 + y^2 + z^2 + 4xy + 4xz
   \]

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