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I know that the Elastic net takes care of the limitations of Lasso by adding an L 2 penalty term. In the attached picture has been mentioned that the two formulas are equivalent. I tried to show this, but I failed.

Could you please help me to see how these two equations are equivariant?

enter image description here

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marked as duplicate by Taylor, Matthew Gunn, Community Nov 10 '18 at 8:45

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