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

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rahul ramabhadran · Answer

apply AM&ge;GM to the expression (k-x) and (x+(x 2 +k 2 )) 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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for any real x the expression 2(k-x)[x+(x 2 +k 2 ) 0.5 ] cannot exceed a)1 b)2 c)4 d)none of these

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

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

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

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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