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Show that the differential equation x cos (y/x) dy/dx ycos (y/x )+ x is homogeneous and solve it. 

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The given difierential equation is:

Thus, F(x, y) is a homogenous function of degree zero.

Therefore, the given differential equation is a homogeneous differential equation.

To solve it we make the substitution

y = vx …(2)

Differentiating equation (2). with respect to x, we get

dy/dx = v + x dv/dx .....(3)

Substituting the value of y and dy/dx in equation (1)

we get,

which is the general solution of the differential equation (1).

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