The degree and order of the differential equation of the family of all parabolas whose axis is x–axis, are respectively
Options:
A .  
1,2
B .  
3,2
C .  
2,3
D .  
2,1
Answer: Option A : A Equation of family of parabolas with x-axis as axis is y2=4a(x+α) where a,α are two arbitrary constants. So differential equation is of order 2 and degree 1.
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