Given that
z=px+qy−2p−3q (1) Its complete integral is
z=ax+by−2a−3b (2)
a,b being arbitrary constants.
Differentiating (2) partially with respect to x
∂x∂z=a=>p=a Differentiating (2) partially with respect to y
∂y∂z=b=>q=b Substituting in (2) we get
z=px+qy−2p−3q The equation (2) is a linear equation in x,y,z. Hence it represents planes for various values of 𝑎 and 𝑏. Substitute x=2,y=3,z=0
2a+3b−2a−3b=0=>0=0The coordinates of the point (2, 3, 0) satisfy the equation (2). Hence the complete integral (2) of (1) represents all possible planes passing through the point (2, 3, 0).
Comments