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Question

Find the equation of the cubic curve whose asymptotes are x+a=0,y−a=0,x+y+a=0 and which touches the x axis at origin and passes through the point (−2a,−2a)?

A
xy(x+y)+a(y2+xyx2)10a2y=0
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B
xy(xy)+a(y2+xyx2)+10a2y=0
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C
xy(x+y)a(y2+xyx2)+10a2y=0
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D
None of these
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Solution

The correct option is A xy(x+y)+a(y2+xyx2)10a2y=0
So to find equation of cubic curve whose asymptotes are x+a=0,ya=0,x+y+a=0
And which toches the x-axis at the origun nd passes through the point (2a,2a)
Put the given equation in options
For x+a=0,ya=0,x+y+a=0 and
At point (0,0)and(2a,2a) satisfy equation (A)
Cubic equation will be xy(x+y)+a(y2+xyx2)10a2y=0

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