Question #cd8ef

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Answer 1 · 2017-03-06T19:58:10

$-1$

$sqrt(2)/(2xx-sqrt(2)/2)$

This is the same as:

$sqrt(2)/(2/2xx-sqrt(2))$

But $2/2=1$

$sqrt(2)/(-sqrt(2)) = -1$

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To get the maths formatting you write:

root 2 over 2 times negative root 2 over 2

as: hash sqrt(2)/(2xx-sqrt(2)/2) hash

where hash $-> "$ # key