Abstract
The Smoluchowski coagulation equation with the kernel Kij=A(i+j)+B is solved exactly for arbitrary initial conditions. The author obtains a compact form of the size distribution for monodisperse initial conditions. For polydisperse initial conditions, a simple form of the size distribution, including a parameter Nkl determined by a recursive relation, is obtained. In the special case with K/sub /ij=i+j, the author obtains the compact form of the size distribution for arbitrary initial conditions.