Teaching DSSSB TGT Mock Test 2025 Mathematical Science Linear Algebra Bilinear Forms,Quadratic Forms
Which of the following real quadratic forms on \(\mathbb{R}\)2 is positive definite?
1
Q(X, Y) = XY
2
Q(X, Y) = X2 - XY + Y2
3
Q(X, Y) = X2 + 2XY + Y2
4
Q(X, Y) = X2 + XY