a) a fonction f (x)y) is homogeneous of degree 7 in X and y it and only it, 3 b.) The function f(xy) - 5x2-Zy²: 8xt3y homogeneous in x and y of degree is %3D c) The function f Cxy) • Px* J4x*+3y* is homogeneous in x and y of degre dy The function f(xy)-(r*r2y) exp G 18xy is homogencous in X and of degree.

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