The degree of the differential equation satisfying
`sqrt(1-x^(2))+sqrt(1-y^(2))=a(x-y)`, is

The order of the differential equation satisfying sqrt(1-x^4)+sqrt(1-y^4)=a(x^2-y^2) is

The order of the differential equation satisfying sqrt(1-x^4)+sqrt(1-y^4)=a(x^2-y^2) is

The degree of the differential equation satisfying sqrt(1+x^(2))+sqrt(1+y^(2))=K(x sqrt(1+x^(2))-y sqrt(1+x^(2))) (1) 4(2)3(3)1(4)2

The order of the differential equation satisfying sqrt(1-x^(4))+sqrt(1-y^(4))=a(x^(2)-y^(2)) is 1 b.2 c.3 d.4

The degree of the differential equation satisfying the relation sqrt(1+x^(2))+sqrt(1+y^(2))=lambda(x sqrt(1+y^(2))-y sqrt(1+x^(2)))