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(1-a^2)/(1+a^2) + (1-b^2)/(1+b^2) + 2/sqrt(1+c^2) <= 2*sqrt(2)This is probably gonna be a dumb question but what's the symbol on the LHS, e.g. (something - a^2)?
I am not certain that the last part of this is valid.Importantly, because, this explicit formula for
shows that
and thus
.
Therefore the inequality is equivalent to
Finally,
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that is some shoddy writing lol