elijahjacksonrp6z2o7
18.10.2019 •
Mathematics
For x, y ∈ r, prove that ||x| − |y|| ≤ |x − y|, (hint: consider x = y + (x −
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Ответ:
Using the triangular inequality (and the given hint!), we have
Similarly,
We managed to bound the quantities in this fashion:
And thus we have
Ответ:
X= 4
Y=7
Z=4
explanation