SCWARZ inequality

Clara Castro

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Apr 7, 2021
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2
How Can I solve this problem A.16 ?

Please
 

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Subhotosh Khan

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How Can I solve this problem A.16 ?

Please
Please show us what you have tried and exactly where you are stuck.

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Please share your work/thoughts about this problem.
1617827981749.png
 

Clara Castro

New member
Joined
Apr 7, 2021
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2
Oh Sure!

sorry, I am new here.

Well, mainly cannot understand how can I get the x1x2 + y1y2 <= |z1||z2| from (x1x2 - x2y1)^2 >= 0.

First I found the expression (x1y2 x2y1)^2 >= 0 from (x1x2 + y1y2)^2 <= |z1|2|z2|2 . But I dont know how to get the x1x2 + y1y2 <= |z1||z2| expression.
 
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