Verify that

\\\\phi (x)=(4)/(1-ce^(x))

, where

c

is an arbitrary constant, is a one-parameter family of solutions to

(dy)/(dx)=(y^(2)-4y)/(4)

. Graph the solution curves corresponding to

c=0,+-1,+-2

using the same coordinate axes.\ Find

(d\\\\phi )/(dx)

.\

(d\\\\phi )/(dx)=

\ (Simplify your answer.)