Example I Variation of temperature with position in a wall is shown below for a specific time,t1,during a transient(time-varying)process. Is the wall being heated or cooled? T(x)at t XVariation of temperature with position in a wall is shown below for a specific time, t 1, during a transient (time-varying) process. Is the wall being heated or cooled? T x T(x) at t 1 Example I