Consider the second order differential equation: 3/ 43/ l 4y : 0 (in which y is a function of t). Which of the following is the characteristic equation of this differential equation? Select one alternative: (A3)2=0 (A4)2:0 (A1)2=0 o(A2)2:0 Let y(t) be the solution to the differential equation y\" 4y' l 4y : 0? with the initial condition 31(0) : 0,y'(0) : 1. Which of the following gives 31(1)? Select one alternative 06 062 063 O 464