Question #cd8ef

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Answer 1 · 2017-03-06T19:58:10

$- 1$ $-1$

$\frac{\sqrt{2}}{2 \times - \frac{\sqrt{2}}{2}}$ $sqrt(2)/(2xx-sqrt(2)/2)$

This is the same as:

$\frac{\sqrt{2}}{\frac{2}{2} \times - \sqrt{2}}$ $sqrt(2)/(2/2xx-sqrt(2))$

But $\frac{2}{2} = 1$ $2/2=1$

$\frac{\sqrt{2}}{- \sqrt{2}} = - 1$ $sqrt(2)/(-sqrt(2)) = -1$

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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 $\to$ $-> "$ # key