The components of complex analytic functions define solutions for the Laplace's equation, and in a simply connected domain, each solution of this equation is the first component of a complex analytic function. In this paper, we generalize this result; for each PDE of the form
Auxx+Buxy+Cuyy=0, and for each affine planar vector field φ, we give an algebra
𝔸 with unit e = e1, with respect to which the components of all functions of the form
scriptL1.5pt∘1.5ptφ are all the solutions for this PDE, where
scriptL is differentiable in the sense of Lorch with respect to
𝔸. Solutions are also constructed for the following equations:
Auxx+Buxy+Cuyy+Dux+Euy+Fu=0,
3rd‐order PDEs, and
4th‐order PDEs; among these are the bi‐harmonic, the bi‐wave, and the bi‐telegraph equations.