- #1

member 731016

- Homework Statement
- Please see below

- Relevant Equations
- Please see below

For this problem,

I am confused how they get all their negative definite, positive definite, and negative semidefinite domains. I agree that ##V_2## is positive definite by definition. However, for ##V_3## I think they made a mistake since by definition, ##V_3## is negative simi-definite.

I'm confused by ##V_1## since Wolfram alpha gives,

So it must be sign indefinite since it is neither negative simi-definite nor positive simi-definite by definition.

Thanks for any help!

I am confused how they get all their negative definite, positive definite, and negative semidefinite domains. I agree that ##V_2## is positive definite by definition. However, for ##V_3## I think they made a mistake since by definition, ##V_3## is negative simi-definite.

I'm confused by ##V_1## since Wolfram alpha gives,

So it must be sign indefinite since it is neither negative simi-definite nor positive simi-definite by definition.

Thanks for any help!