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for any real x the expression 2(k-x)[x+(x2+k2)0.5] cannot exceed a)1 b)2 c)4 d)none of these

sudarshan gupta , 15 Years ago
Grade Upto college level
anser 1 Answers
rahul ramabhadran

Last Activity: 15 Years ago

apply AM≥GM to the expression (k-x) and (x+(x2+k2)) and find the minimum value of AM and equate it as the maximum value of the GM.on simplification,you'll get the answer as 2

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