Question: Y6 Consider Q = 2x^2 + 16xy - 8y^2 . a) Write Q as a quadratic form. b) Is Q positive or negative definite (or

Y6

Consider Q = 2x^2 + 16xy - 8y^2 .

a) Write Q as a quadratic form.

b) Is Q positive or negative definite (or neither)?

c) Subject to the constraint 2x - 2y = 0, is Q positive or negative definite (or neither)?

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