Solve the following :-
a) Find the solution of the differential equation:
(ax + hy + g)dx + (hx + by + f )dy = 0
b) Use the method of undermined coefficients to find the general solution of the
differential equation:
d^3y/dx^3 + d^2y/dx^2 = 3e^x + 4x^2
c) Solve the differential equation:
dy/dx - (3/2x)y = 2x/y
d) Use the method of variation of parameters to solve the differential equation:
y''' + 3y' + 2y = 4e^x
e) Find the integral curve of the differential equations:
dx/( x^2 - y^2 - z^2 ) = dy/2xy = dz/2xz
f) Find a particular integral of differential equation:
(D^3 - D' ^3)z = x^3 × y^3
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