6.54.2 Transforming a matrix into a quadratic form: a2q
The a2q command finds the quadratic form corresponding to a
symmetric matrix.
-
a2q takes two arguments:
-
A, a symmetric matrix of a quadratic form.
- vars, a vector of variable names whose size is the
same as the number of rows of A.
- a2q(A,vars) returns the symbolic
expression for the quadratic form.
Examples.
-
Input:
a2q([[0,1],[1,0]],[x,y])
Output:
- Input:
a2q([[1,2],[2,4]],[x,y])
Output: