Hi,

I am looking to solve the following First Order differential equation, and am not sure what method to use i.e. seperating variables or Integrating factor.

The equation is dw/dt = k(a-w)

The result that the book gives is:

w = a(1-Be^-kt)

Can some one please show me how this can be solved in full and what method to use.

Many thanks,

Adam.