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0 votes
16.4k views
in Differential equations by (52.6k points)

The curve satisfying the differential equation, (x2 – y2)dx + 2xydy = 0 and passing through the point (1, 1) is 

(A) a circle of radius one. 

(B) a hyperbola. 

(C) an ellipse. 

(D) a circle of radius two.

1 Answer

+1 vote
by (54.9k points)
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Best answer

Answer is (A) a circle of radius one.

which passes through (1, 1). Therefore, 

 c = 2 

So, x2 + y2 – 2x = 0 

Therefore, the curve is a circle. 

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