Find the temperature in a bar of silver of length 10 cm and constant cross section of area (density , thermal conductivity , specific heat that is perfectly insulated laterally, with ends kept at temperature and initial temperature , where f(x) °C 0°C 0.056 cal>(g °C) 10.6 g>cm3 1.04 cal>(cm sec °C) 1 cm2 u (x, t)