A) \[{{a}^{2}}+{{b}^{2}}<2\]
B) \[{{a}^{2}}+{{b}^{2}}<4\]
C) \[{{a}^{2}}+{{b}^{2}}>4\]
D) \[a+b>ab\]
Correct Answer: B
Solution :
[B] Apply\[-\frac{{{(a-b)}^{2}}-\,4\,\,(1-a-b)}{4}>\frac{{{(a+b)}^{2}}-\,4\,\,(1+a+b)}{4}\] \[{{a}^{2}}+{{b}^{2}}<4\]You need to login to perform this action.
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