Consider a one dimensional plane wall with a thickness 2l. the surface at x = – l is subjected to convective conditions characterized by t[infinity],1, h1, while the surface at x = + l is subjected to conditions t[infinity],2, h2. the initial temperature of the wall is to = (t[infinity],1 + t[infinity],2)/2 where t[infinity],1 > t[infinity],2. write the differential equation and identify the boundary and initial conditions that could be used to determine the temperature distribution t(x, t) as a function of position and time.