3.) (1 point) Ay+By=C is a reoccurring ODE in engineering and physics, where A,B \& C are constants. a) Show the steps for the derivation of an integration factor even if A,B and C are all functions of time. b) Set A=1,C=sin(t) and B=sin(t). Solve the ODE if y(/2)=1 The secant of x is 1 divided by the cosine of x : secx=cosx1 and the cosecant of x is defined to be 1 divided by the sine of x : cscx=sinx1