Gnarls B.

asked • 03/24/17

How do I justify this absolute value problem?

Is the following statement true for all x, y ∈ R? Justify your answer. |x| + |y| = |x + y|

1 Expert Answer


Arturo O. answered • 03/24/17

5.0 (66)

Experienced Physics Teacher for Physics Tutoring

David W.

In order to "justify your answer," you may simply give one example to invalidate the statement:  "for all x, y ∈ R"
The example given justifies (that is, makes valid) the answer above ("It is not always true.").


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