Hi,

I'm having issues with this (I'm sure very basic) example:

y'' - y' + 2y^2(1 - y) = 0

Find a value of the constant a s.t. y = (1 + e^(ax))^-1 is a solution of this equation.

I assumed I would be able to work out y'' and y', plug into the equation and solve for a but this doesn't seem to work.

Any ideas please?