SOLUTION: show by a counter example that (x+y)^-2 and x^-2+y^-2 are not equivalent.
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Question 908854: show by a counter example that (x+y)^-2 and x^-2+y^-2 are not equivalent.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let and .
.
.
.
So clearly,
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