what is the answer for this question?
it is an entrance based question
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the answer is option C..
by option verification:
let f(x)= x^2 -2
then f( x + 1/x) =( x + 1/x)^2 - 2
= x^2 + 1/x^2 + 2(x)(1/x) - 2
= x^2 + 1/x^2 +2 - 2
f(x + x/x) = x^2 + 1/ x^2
hence verified that option c is correct
by option verification:
let f(x)= x^2 -2
then f( x + 1/x) =( x + 1/x)^2 - 2
= x^2 + 1/x^2 + 2(x)(1/x) - 2
= x^2 + 1/x^2 +2 - 2
f(x + x/x) = x^2 + 1/ x^2
hence verified that option c is correct
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