1.

The locus of the centre of the circle which cuts off intercepts of length \[2a\] and \[2b\] from x-axis and y-axis respectively, is

A.            \[x+y=a+b\]                           
B.            \[{{x}^{2}}+{{y}^{2}}={{a}^{2}}+{{b}^{2}}\]
C.            \[{{x}^{2}}-{{y}^{2}}={{a}^{2}}-{{b}^{2}}\]         
D.            \[{{x}^{2}}+{{y}^{2}}={{a}^{2}}-{{b}^{2}}\]
Answer» D.            \[{{x}^{2}}+{{y}^{2}}={{a}^{2}}-{{b}^{2}}\]


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