3. Consider the following two second order scalar differential equations: dzy \")E' = 0 d2 Mggw = 0 YWrit-e eaeh equation as a rst order twodimensional system of differential equations (for a total of two, two dimensional systems). use vectormatrix methods to nd the general solution of each system. sketch the phase portrait of each system and determine the type of equilibrium the equilibrium at the origin is for each system