i.

Given the vector equation of a plane,

Let

Then, the given vector equation becomes,

Now multiplying the two vectors using the formula, we get

This is the Cartesian form of equation of a plane whose vector equation is

ii.

Given the vector equation of a plane,

Let

Then, the given vector equation becomes,

Now multiplying the two vectors using the formula, we get

This is the Cartesian form of equation of a plane whose vector equation is