Q.

The differential equation dxdy=3y2x represents a family of  hyperbolas (except when it represents a pair of lines) with  eccentricity

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a

85

b

53

c

25

d

52

answer is B.

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Detailed Solution

dxdy=3y2x⇒        ∫2xdx    =∫3ydy⇒        x2    =3y22+cor     x23−y22=c3 If c is positive, then e=1+23=53If c is negative, then e=1+32=52
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