1.

If the roots of the equation \[{{x}^{2}}+2ax+b=0\]are real and distinct and they differ by at most 2m then b lies in the interval

A. \[({{a}^{2}},{{a}^{2}}+{{m}^{2}})\]        
B. \[({{a}^{2}}-{{m}^{2}},{{a}^{2}})\]
C. [\[{{a}^{2}}-{{m}^{2}},{{a}^{2}}\])         
D. none of these
Answer» D. none of these


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