Questions
The differential equation of the family of parabolas with vertex at (0,-1) and having axis along the y-axis is
a
xy1+y+1=0
b
xy1−2y-2=0
c
xy1−y-1=0
d
yy1+2xy+1=0
detailed solution
Correct option is B
x2=4a(y+1)−c ..............(i)⇒2x=4adydx⇒4a=2xy1.............(ii) From 1 and 2⇒xy1−2y−2=0Talk to our academic expert!
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The general solution of the differential equation is
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