4- For each of the following equations find the general integral and compute three different solutions. Describe carefully the domains of the (x, y)- plane in which each of these solutions is defined: 1)azx + bzy = c 2)x(Zx+Zy) - 2z = 0 3) y³z -Zx + x²zzy - y³ = 0 X Z 4) − z ²x + (2x+y+z)zy = 2x + y 2

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