Abstract
This paper investigated a modified integral transform method used to solve heat equation in cylindrical coordinate, this modification method has been obtained based on integral transform (x-coordinate), we expand integral transform (x-coordinate) to integral transform (x,y,z,t-coordiantes) and convert it to cylindrical coordinate denoted by integral transform (r,θ,z,t-coordinates). Finally we used integral transform to solve heat equation in cylindrical coordinate.
