Solve these recurrence relations together with the initial conditions given. a) an =2an−1 forn≥1,a0 =3 b) an =an−1 forn≥1,a0 =2 c) an =5an−1 −6an−2 forn≥2,a0 =1,a1 =0 d) an =4an−1 −4an−2 forn≥2,a0 =6,a1 =8