Asked by Janet
Show by counterexample that (x+y)^-2 and x^-2+y^-2 are not equivalent??
Answers
Answered by
Steve
plug in x=1 and y=2
(1+2)^-2 = 1/9
1^-2 + 2^-2 = 5/4
(1+2)^-2 = 1/9
1^-2 + 2^-2 = 5/4
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