Why can't I use an integrating factor when asked to find the complementaryt function of this?
dy/dt + 2y = e^-2t
I figured I either use an auxiliary eqn or I.F but the I.F doesn't work. Am i missing some conditions conditions to use an I.f or something thnx.
The I.f rule states in the form dy/dx +Py = Q
where P and Q are functions of x you can use the I.f
Since in this example 2 was essentially a function of x(i don't know how i just thought it is a constant) then arguably Q can just be a constant. Does that mean that i can use the I.f method for instance with dy/dx + 2y = 3??thnx