Question

find the nature of the quadratic form -2xsq -4ysq of a 3×3 matrix​

Answer 1

Answer:

Step-by-step explanation:

A quadratic form of one variable is just a quadratic function Q(x) = a · x2. If a > 0 then Q(x) > 0 for each nonzero x. If a < 0 then Q(x) < 0 for each nonzero x. So the sign of the coefficient a determines the sign of one variable quadratic form.