Assist me to tackle the Question below
19. Sagar and Payne [SPI analyze the stress-strain relationships and material properties of a cylinder alternately subjected to heating and cooling and consider the equation where T = T(r, t) is the temperature, r is the radial distance from the center of the cylinder, t is time, and K is a diffusivity coefficient. a. Find approximations to T(r, 10) for a cylinderwith outside radius 1,given the initial and boundary conditions: T(r,0) = 200(r _
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