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20. We have to find the minimum value.. ................help.... . ...

20. We have to find the minimum value.. ................help.... . ... 

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1 Answers

Arun
25758 Points
4 years ago
Dear Pushkar
 
x^2 + [ 1 / (x^2 + 1) ] – 3
 
we can write it as
 
(x^2 + 1) + 1/ (x^2 + 1) – 4
 
As we know any form of p + 1/p will have minimum +2 value if p is positive
 
now
 
for minimum value
 
 = 2 – 4 = – 2
 
Regards
Arun

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