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richyw
 3 years ago
show that \(\left \mathbf{a}\mathbf{b}\right \leq \mathbf{a}\mathbf{b},\quad\forall\:\mathbf{a,b}\in\mathbb{R}^n\)
richyw
 3 years ago
show that \(\left \mathbf{a}\mathbf{b}\right \leq \mathbf{a}\mathbf{b},\quad\forall\:\mathbf{a,b}\in\mathbb{R}^n\)

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slaaibak
 3 years ago
Best ResponseYou've already chosen the best response.1(a  b)^2 = a^2  2ab + b^2 >= a^2  2ab + b^2 = a^2  2ab + b^2 so, (a  b)^2 >= a^2  2ab + b^2 which leads to: (a  b)^2 >= (a  b)^2 > a  b >= a  b
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