Prove that |x| − |y| ≤ |x − y| for all x, y ∈ R by using the properties of absolute value?

2017-01-15 9:42 pm
How to prove that
a) |x| − |y| ≤ |x − y| for
all x, y ∈ R
b) |x^2−4| ≤ 3|x−2|.
by using the properties of absolute value?

Thanks!

回答 (1)

2017-01-15 10:02 pm


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