I'm stuck on a problem. It involes the temperature/resistivity relationship formula: [tex]\rho = \rho_0 (1 + \alpha (T - T_0))[/tex] In the problem I am given the value of [tex]\alpha[/tex] and [tex]\rho_0[/tex] and I am told that these values were found at 20 degrees Celcius. I am asked to find the coefficient [tex]\alpha^'[/tex] at 0 degrees. So that: [tex]\rho = \rho_0^'[/tex][tex](1 + T[/tex][tex]\alpha^'[/tex][tex])[/tex] Were [tex]\rho_0^'[/tex] is the resistivity at 0 degrees. Seems like I need more information after equating both equations. I think I should be able to show alpha prime as a fuction soley of alpha (independant of everything else) is this correct? any help would be appreciated, thanks!