1.

Which of the following differential equations has y = x as one of its particular solution?

Answer»

`(d^(2)y)/(DX^(2))- x^(2)(dy)/(dx) + XY = x`
`(d^(2)y)/(dx^(2)) + x(dy)/(dx)+xy = x`
`(d^(2)y)/(dx^(2))-x^(2)(dy)/(dx)+xy = 0`
`(d^(2)y)/(dx^(2)) + x(dy)/(dx) + xy = 0`

Answer :C


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