Boyd & Vandenberghe, 9.2 — how was this derived?

Asked Jun 10 '21 at 16:25

Active Jun 11 '21 at 22:18

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I'm studying convex optimization and saw the solution to the question. However I can't understand how they ended up in the last equation which I've highlighted in yellow. I have tried putting $x_1$ and $x_2$ in but can't get the last one. Could anybody help?

edited Jun 11 '21 at 22:18

Rodrigo de Azevedo

asked Jun 10 '21 at 16:25

Cherry Hill St.

1

When you include text from a book it is considered good form to give a reference. – copper.hat Jun 10 '21 at 16:27
Use the fact that $|y|_2^2 = y^T y$ and expand the norm squared term. – copper.hat Jun 10 '21 at 16:29
@CherryHillSt. 9.2 what? – Rodrigo de Azevedo Jun 11 '21 at 22:20
Listed – Rodrigo de Azevedo Jun 15 '21 at 14:41

Boyd & Vandenberghe, 9.2 — how was this derived?

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