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CBSE XII
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Math
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Differential Equations
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Q)
Form the differential equation of the family of circles in the first quadrant which touch the coordinate axes.
$(A)\;(x−y )^2 (1- y ′ )^2 =(x+y y ′ )^2$
$(B)\;(x−y )^2 (1+ y ′ )^2 =(x-y y ′ )^2$
$(C)\;(x−y )^2 (1+ y ′ )^2 =(x+y y ′ )^2$
$(D)\;(x+y )^2 (1+ y ′ )^2 =(x+y y ′ )^2$
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